Simple categories matching difficult:

• structure,
• area,
• process,
• carbohydrate,
• location,
• particle,
• terrain,
• environment,
• emotion,
• placement,
• fabric,
• apparatus,
• material,
• surface,
• treatment,
• subject,
• article,
• substrate,
• illness,
• thing,
• condition,
• stain,
• stone,
• item,
• disease,
• odor,
• pose,
• space,
• fiber,
• content,
• idea,
• matrix,
• problem,
• object,
• region,
• tumour,
• texture,
• bond,
• video,
• conflict,
• polymer,
• suit,
• text,
• question,
• behaviour,
• shape,
• period,
• math,
• course,
• pregnancy,
• insecticide,
• fire,
• place,
• instrument,
• science,
• tank,
• infection,
• job,
• peak,
• installation,
• part,
• position,
• compound,
• years,
• fibre,
• trait,
• circumstances,
• maneuver,
• shot,
• medium,
• case,
• cave,
• group,
• sector,
• joint,
• labor,
• stuff,
• site,
• language,
• event,
• zone,
• activity,
• crossing,
• rock,
• deposit,
• discipline,
• product,
• dog,
• dirt,
• point,
• mission,
• times,
• articulator,
• fuel,
• feature,
• state,
• obstacle,
• situation,
• sugar,
• contaminant,
• delivery,
• signal,
• dermatosis,
• metal,
• concern,
• time,
• works,
• original,
• weather,
• commodity,
• powder,
• work,
• target,
• setting,
• plastic,
• class,
• reality,
• image,
• matter,
• artifact,
• card,
• injury,
• institution,
• profession,
• food,
• behavior,
• coating,
• issue,
• symptom,
• tray,
• picture,
• vessel,
• topic,
• ground,
• waste,
• flow,
• surgery,
• system,
• quarry,
• hardware,
• measurement,
• component,
• fluid,
• access,
• feeling,
• container,
• substance,
• disorder,
• concept,
• soil,
• information,

Members with property difficult:

• arctic,
• face,
• grease,
• silicone_oil,
• old_brick,
• hands,
• ear,
• railroad_crossing,
• nose,
• problem,
• fox_image,
• door_handle,
• fire_employee,
• assault,
• socket,
• nuclear_waste,
• anger,
• image_processing,
• bitterness,
• cancer,
• prison,
• wild_terrain,
• foot,
• orientation,
• value_development,
• oil,
• rare_earth,
• broken_heart,
• substance,
• fabric,
• shielded_room,
• chemistry,
• tracing_board,
• axillary_fold,
• old_illness,
• ladle,
• male_breast,
• aluminium_nitride,
• gas_absorption,
• pesticide,
• horizontal_blind,
• parsley,
• sadness,
• powdered_coal,
• conservation_framing,
• development,
• shaded_text,
• painted_wood,
• deodorant,
• asphalt,
• family_difficulty,
• resignation,
• turbine_blade,
• troubled_romance,
• plastic_tape,
• tungsten_carbide,
• special_reconnaissance,
• earthquake_site,
• special_collection,
• beryllium,
• isolation,
• textured_stucco,
• school_finance,
• embarrassment,
• closure,
• shady_corner,
• canadian_basin,
• abrasive,
• mountain,
• top,
• high_building,
• personality_conflict,
• under_nose,
• organic_waste,
• gall,
• synthetic,
• office_politics,
• natural_emerald,
• polystyrene,
• remote_land,
• biomass,
• custom_cutout,
• pole_mount,
• photomicrograph,
• protection,
• intersection,
• assembly,
• magnesium_alloy,
• intracranial_artery,
• mechanics,
• psoriasis,
• body_design,
• complicated_analysis,
• bullying,
• insulator_grease,
• ginger,
• extreme_heat,
• deep_orbit,
• tough_polyester,
• gaming,
• heavy_fog,
• science,
• effect,
• abs_polymer,
• mouth,
• work,
• depression_years,
• structural_steel,
• memory,
• toner_powder,
• cerebral_palsy,
• carbon_fiber,
• throat,
• lip_gloss,
• balance_ball,
• advanced_technology,
• dishcloth,
• steel,
• distillation,
• family_problem,
• sodium,
• meat_quality,
• proximity_card,
• second_floor,
• cold_store,
• rear_molar,
• joint_area,
• celestite,
• attic,
• assistance,
• stellite,
• abortion,
• pashto,
• home_video,
• corrosion,
• buffing_compound,
• steep_grade,
• darkness,
• arrangement,
• shift,
• nasal_passage,
• construction,
• attic_loft,
• wye_piece,
• rock,
• stainless,
• simple_math,
• island,
• hardwood_floor,
• moodiness,
• clay_site,
• polyphonic_music,
• husband_violence,
• happiness,
• skin_allergy,
• dried_adhesive,
• embarrassing_behavior,
• sexual_history,
• hazardous_waste,
• desert,
• poncho,
• board_fence,
• head_trauma,
• upper_abdomen,
• urban_canyon,
• tiled_floor,
• preparation,
• physical_chemistry,
• acne,
• sport_field,
• sphere,
• hobby,
• polished_stone,
• korean,
• coated_metal,
• military_waste,
• interfaith_marriage,
• corner,
• abutment,
• labor_law,
• prostate,
• forest_conservation,
• party_room,
• stadium_cleanup,
• optical_alignment,
• shift_work,
• postwar_period,
• geography,
• collie,
• canada_north,
• romanian,
• verbal_abuse,
• toe,
• child_discipline,
• forensic_issue,
• pastelike_material,
• music,
• engine_oil,
• posterior_wall,
• whiteout,
• street_cabinet,
• chemical-bond_formation,
• blue_stain,
• karate_belt,
• polyamide,
• english,
• heart_condition,
• polythene,
• hot_asphalt,
• brake_fluid,
• incontinence_procedure,
• irritability,
• wool,
• environmental_problem,
• intestinal_cancer,
• corrosive_chloride,
• eyeglass_case,
• shooting,
• fire-truck_mission,
• under_floor,
• motorbike,
• infection,
• mold,
• building_excavation,
• illness,
• boiler,
• joint,
• orbit,
• cover,
• notion,
• dynamic_background,
• carpet,
• mountain_oyster,
• concrete,
• question,
• limb,
• technology,
• refined_sugar,
• concrete_canyon,
• sugar,
• hardware_article,
• lighted_candle,
• sticky_paste,
• blood,
• customer_complaint,
• berber_carpeting,
• nitrogen_ammonia,
• laptop,
• writing,
• arabic,
• drawing_tool,
• apophatic_theology,
• power_control,
• data_analysis,
• grain,
• endurance,
• organic,
• cap,
• satin,
• paper,
• complaint,
• vector,
• alkaline_soil,
• over_water,
• stereotype,
• boron_carbide,
• formaldehyde,
• noble_metal,
• machine-tool_coolant,
• sportswear,
• iron_oxide,
• resistance,
• low_water,
• chiffon,
• vinyl_siding,
• airway_obstruction,
• chemical-plant_vent,
• overwhelming_anxiety,
• italian,
• military_zone,
• frustration,
• wings,
• arcade_formula,
• pattern,
• auditorium,
• data-processing_area,
• flue,
• decal,
• dari,
• agricultural_fiber,
• lumbar_area,
• pvc,
• goldenrod_form,
• belt,
• saline_soil,
• animal_odor,
• mountain_area,
• cylinder,
• busy_junction,
• block,
• jewelry,
• law,
• pedestal_box,
• minority_right,
• leg_calf,
• arthritis,
• glossy_paper,
• firework,
• small_duct,
• small_door,
• sorrow,
• membrane_protein,
• extreme_dryness,
• ammonia,
• cancer_treatment,
• cross_member,
• gasoline,
• nutrition,
• serious_health,
• cutaneous_lymphoma,
• highway_crossing,
• emergency_situation,
• justice_matter,
• vocabulary,
• hot_solution,
• shocked_patient,
• soap,
• dry_shade,
• sport,
• metal,
• brake_dust,
• physiology,
• vent_riser,
• modern_hebrew,
• afghan,
• reprint,
• heavy_rain,
• money_issue,
• civil_conflict,
• cervical_spine,
• velvet,
• dog,
• loop,
• textured_surface,
• aluminium,
• embarrassing_appearance,
• torque_roll,
• hurricane,
• overhead_smash,
• building_construction,
• neglect,
• public,
• polyethylene_bag,
• rubber_flooring,
• summary,
• husband_pillow,
• cobalt_chrome,
• driveway_sealer,
• dielectric,
• breast,
• violent_marriage,
• arm_flab,
• core,
• yard,
• amharic,
• culture,
• rib,
• exotic_alloy,
• oil_fire,
• swahili,
• waste,
• smoking,
• school,
• nail,
• mathematics_class,
• postpartum_convulsion,
• salt,
• ball_groove,
• library,
• chemotherapy,
• water_stain,
• god,
• engine_part,
• glass,
• sand,
• suit,
• keratoconus,
• deceptive_problem,
• ankle,
• powder_coating,
• penis,
• regret,
• high-temperature_alloy,
• abdominal_wall,
• radiation,
• window_entry,
• sweater,
• family_conflict,
• pigment,
• gypsum,
• radical_islam,
• ammonia_compound,
• card_stock,
• deep_pelvis,
• paint_pigment,
• drought_years,
• hydrocarbon,
• said_island,
• fog,
• clay,
• finding_client,
• high_heat,
• small_pneumothorax,
• biological_material,
• safety,
• philosophy,
• cooker_knob,
• fold,
• gates,
• cuticle,
• waste_paint,
• wallet,
• fur,
• head,
• envy,
• lacquer,
• hopelessness,
• man,
• realigning_policy,
• deep_shade,
• elbow,
• loss,
• tongue,
• severe_winter,
• mildew_stain,
• asphaltic_compound,
• battery,
• ticker_text,
• tunnel,
• hospital_grounds,
• cotton_duck,
• anthracite,
• reef_tank,
• laws,
• curved_counterweight,
• exposed_area,
• glasses,
• organic_polymer,
• sock,
• jelly,
• financial_instability,
• auto_shop,
• abs,
• alcohol,
• diamond_plate,
• corrections,
• discipline_problem,
• meat,
• urea,
• finger,
• manufacturing_problem,
• particle_collection,
• longing,
• file,
• rock_wall,
• conveyor_throat,
• grassland,
• cause,
• japanese,
• genitals,
• nickel,
• medical_crisis,
• spanish,
• tank,
• depression,
• body,
• shock,
• limestone,
• depressed_mood,
• latin,
• milk,
• foodstuff,
• pediatric_case,
• under_ice,
• axilla,
• disease,
• chronic_illness,
• mountain_top,
• issue,
• small_entryway,
• long_distance,
• retrograde_condensate,
• transmission_repair,
• average_course,
• heavy_grease,
• celery,
• repetition,
• linen,
• sink_pedestal,
• mythology,
• politics,
• side,
• steep_hill,
• slope,
• jewellery,
• low_pressure,
• hospice,
• due_diligence,
• rechargeable_battery,
• building_maintenance,
• advanced_backpacking,
• environmental_noise,
• moisture,
• thoracic_inlet,
• rock_fill,
• physics,
• phenol,
• economics,
• letters_puppy,
• sheet-metal_pressing,
• tulip,
• lung,
• new_cam,
• chemical_works,
• eczema,
• voluntary_sector,
• small_package,
• aluminum_alloy,
• republican_territory,
• unbelievable_surprise,
• computer-program_design,
• print,
• spinal_surgery,
• loneliness,
• soft_stone,
• blanket,
• ambivalence,
• knuckles,
• corrosive,
• emergency_placement,
• stability,
• eating-disorder_case,
• violin,
• application_domain,
• distemper,
• conglomerate,
• heavy_hydrocarbon,
• human_hip,
• organophosphate,
• active_directory,
• orbital_model,
• career_change,
• thick_notebook,
• science_lead,
• lung_excision,
• rage,
• tantalum,
• civil_war,
• pelvis,
• technical_breakdown,
• structure,
• behind_ear,
• tongue_swelling,
• enantiomer,
• fear,
• black_rubber,
• physical_aggression,
• plating_waste,
• asthma,
• sickness,
• upper_throat,
• postoperative_complication,
• porphyry,
• memory_module,
• marriage,
• legs,
• antibody,
• knee,
• large_furniture,
• cannon,
• game,
• complex_corner,
• acetate,
• cadmium,
• hybrid_culture,
• poor_visibility,
• high_anxiety,
• textile,
• steep_pipe,
• zulu,
• guilt,
• english_grammar,
• liquified_gas,
• teaching_math,
• streaky_bacon,
• aliphatic_coating,
• pinion_housing,
• landing,
• condenser,
• architecture,
• heavy_clay,
• contentious_issue,
• complex_landscape,
• theatre,
• functional_part,
• heartache,
• thin_glass,
• cs,
• rear,
• denim,
• nylon_jacket,
• sarcoma,
• onyx,
• battlefield_environment,
• belief,
• notch,
• tire,
• liquid,
• changing_gear,
• fluorite,
• sapphire,
• inconel,
• behind_cabinet,
• concern,
• button,
• marble,
• woe,
• rigid_pvc,
• cave,
• areola,
• faith,
• database-management_system,
• painted_brick,
• eyelid,
• static_powder,
• math,
• trigonometry,
• inside_corner,
• ecology,
• confusion,
• shadow,
• bathing,
• asbestos_residue,
• scleroderma,
• wood_desk,
• leather,
• large_baby,
• measurement_objective,
• flow_wrap,
• outside_corner,
• various_brand,
• defiance,
• dissimilar_metal,
• wall_cavity,
• cylindrical_shape,
• coke,
• combativeness,
• desert_island,
• acrylic,
• perception,
• room_corner,
• testing,
• salty_surroundings,
• wood,
• word_problem,
• family_dynamics,
• basement,
• ladder,
• wet_soil,
• offspring_access,
• pc_keyboard,
• grille,
• diamond,
• abattoir_waste,
• pashtu,
• discipline,
• ms,
• ferrite,
• rheumatoid_arthritis,
• anxiety,
• glue,
• cable_fire,
• tb,
• round_ball,
• wet_stone,
• manhole,
• blouse,
• history,
• smoke,
• credit_problem,
• step_pipe,
• shoes,
• name_placement,
• democracy,
• al,
• herringbone,
• early_als,
• block_wall,
• literature,
• contraception,
• packed_snow,
• nostril,
• hill,
• planet,
• pipe,
• arts,
• radiator,
• bridge_pose,
• bright_light,
• bunker_oil,
• physical_exercise,
• key_change,
• baby_clothes,
• stress,
• rain,
• zinc,
• yellow_envelope,
• bengali,
• desire,
• ps,
• roof_space,
• finance,
• old_tile,
• religion,
• graffito_paint,
• wide_river,
• brick,
• peacekeeping,
• asbestos,
• inside_car,
• purse,
• pacemaker,
• ice,
• ca,
• chin,
• alumina,
• war,
• corn,
• school_failure,
• attention,
• perineum,
• antique,
• mandarin,
• austenitic_steel,
• refrigerator,
• poodle,
• backyard,
• under_tree,
• steep_embankment,
• grout_line,
• neurophysiological_principle,
• chicken_foot,
• valve,
• malignant_tumor,
• flood,
• universe,
• london_street,
• rachmaninoff_transcription,
• perfluorocarbon,
• job_loss,
• low_illumination,
• sticker_residue,
• briefcase,
• lampshade,
• candle_wax,
• child_custody,
• lumber,
• large_garbage,
• cast_metal,
• long_pin,
• misery,
• dredger,
• java,
• rubber,
• javelin,
• roads,
• plane,
• application,
• dense_garden,
• diaphragm,
• stucco,
• alkyl_chloride,
• gravel,
• titanium,
• coal_powder,
• uneven_wall,
• factory_work,
• upset_end,
• brass,
• judgment,
• cement_sheet,
• hip,
• defendant_bond,
• abdomen,
• calculating_trajectory,
• coarse_alluvium,
• car_accident,
• polystyrene_packaging,
• viscose,
• gaff_deck,
• cooker_hob,
• advanced_mathematics,
• night,
• stomach,
• statistics,
• meaning,
• phobia,
• shirt,
• tape_residue,
• construction_site,
• acetic_substrate,
• coronary_disease,
• chemical,
• alzheimers_disease,
• titanium_alloy,
• handstand,
• low_light,
• physical_therapy,
• coordinate_transformation,
• silt,
• busy_street,
• pure_cotton,
• fleece_garment,
• muscular_dystrophy,
• thick_carpet,
• insoluble_clay,
• pu,
• tent,
• linoleum,
• tuberculosis,
• bra,
• furnace,
• transition,
• organic_chemistry,
• side_wall,
• stairwell,
• id_card,
• democratic_values,
• viscous_crude,
• winter_storm,
• roof_vent,
• untreated_aluminum,
• personal_crisis,
• lead,
• science_class,
• als,
• carbide,
• serious_illness,
• scalp,
• doubt,
• current_drought,
• fuel_tank,
• relationship,
• bladder,
• pain,
• sanskrit,
• tar,
• life,
• hunting,
• icebound_stream,
• alcove,
• female_disease,
• vent,
• shoulder,
• self_employment,
• nitrile,
• windows,
• curriculum,
• adhesive,
• thigh,
• protein,
• environmental_development,
• urban_environment,
• vitiligo,
• varnished_medium,
• area,
• parental_separation,
• arch,
• foam,
• wound,
• cheek,
• rural_economics,
• service_duct,
• climbable_surface,
• vault,
• presidential_politics,
• lupus,
• baseboard,
• flank,
• quantitative_analysis,
• workplace_death,
• forest,
• dna,
• under_microscope,
• tiny_surface,
• performance,
• metallic_environment,
• propeller,
• salt_brine,
• crystalline_substrate,
• abdominal_belt,
• dc_area,
• trial,
• arctic_cold,
• worry,
• electrical_work,
• grief,
• busy_intersection,
• pollutant,
• skin_fold,
• foundation,
• piano,
• disappointment,
• fluff,
• moisture_environment,
• reimbursement_system,
• hazardous_chemical,
• hair,
• label_residue,
• green_wood,
• poor_lighting,
• wet_grounds,
• jean,
• back_area,
• certain_grease,
• airplane,
• copper,
• environment,
• helplessness,
• dirt,
• glaucoma,
• lower_level,
• narrow_side,
• heavy_oil,
• plastic_substrate,
• ceiling_space,
• wall,
• blood-serum_residue,
• neck,
• shade,
• boot,
• sprocket,
• brain_wound,
• parking_structure,
• medicine,
• rough_wood,
• wet_paint,
• heat,
• aged_enamel,
• jackrabbit,
• dry_wall,
• bypass_surgery,
• window_installation,
• nasal_fold,
• human_eye,
• slurry,
• spinach,
• screen,
• strong_vibration,
• rig_structure,
• heel,
• snow_storm,
• drawing,
• coated_paper,
• chrome,
• untreated_film,
• sand_mold,
• cone,
• human_skin,
• bridge,
• pediatric_patient,
• neck_area,
• dissipation_factor,
• cardiac_arrhythmia,
• fire,
• high_pressure,
• gas_mixture,
• diabetic_wound,
• hindi,
• requirement,
• heroic_instance,
• distress,
• multiple_sclerosis,
• national_rail,
• tile_backing,
• chronic_fatigue,
• foreign_words,
• rugged_terrain,
• spar,
• icelandic,
• subject,
• social_issue,
• hell,
• utility,
• terrorism_duty,
• hall,
• pocket,
• telomere,
• suspiciousness,
• nylon_mesh,
• resentment,
• ms_drum,
• gravel_drive,
• untreated_polyester,
• dried_blood,
• uncertainty_principle,
• cranium,
• system,
• speech,
• vertical_blind,
• production_area,
• lubricant,
• gold,
• honor_english,
• rural_area,
• love,
• control,
• ultrasound_image,
• large_picture,
• food_powder,
• silverware,
• russian,
• curving_stairs,
• greek,
• apache,
• cooler,
• vessel,
• mechanical_shock,
• gelatinous_particle,
• metabolic_disease,
• corkscrew,
• drought,
• renal_artery,
• cubic_zircon,
• carboy,
• leaf,
• bike,
• jealousy,
• osteoporosis,
• anisotropic_problem,
• nicotine,
• inaccessible_pinnacle,
• melamine,
• tile,
• cuff,
• gel,
• breakable_crust,
• danish,
• arctic_region,
• small_space,
• shale,
• nervousness,
• heaviness,
• rack,
• sandy_soil,
• teacher_retrenchment,
• ceramic_tile,
• chemical_medium,
• vinyl,
• allergy,
• teasing,
• eye,
• calf,
• textured_substrate,
• abuse,
• northwest,
• wall_corner,
• paint,
• certain_cancer,
• poor_soil,
• embedded_dirt,
• serial,
• skydiving,
• storm,
• security,
• bath,
• death,
• raid,
• corrosive_liquid,
• coastal_area,
• cloth,
• thermoset_resin,
• shady_area,
• forearm,
• milk_bottle,
• reading,
• suede,
• glove,
• metal_stain,
• fingerprint,
• international_politics,
• sponge,
• beanbag,
• oval_shape,
• oenothera,
• appliance,
• world_history,
• product,
• anguish,
• australian_coal,
• curb,
• graphite,
• turret,
• stone,
• cold,
• wreck,
• busy_roads,
• pipe_laying,
• rifle,
• cotton,
• polyester,
• polyethylene,
• arabic_farsi,
• copyright_law,
• diphtheria,
• hot_pavement,
• aluminium_sheet,
• engineering,
• warm_clothing,
• warehouse,
• large_piece,
• over_bed,
• workshop,
• sleeper,
• solution,
• invariant,
• violence,
• delusion,
• subatomic_physics,
• rescue_action,
• finished_wall,
• caustic,
• spinal-cord_injury,
• nylon_fabric,
• excessive_shade,
• quality,
• ceiling,
• screen_print,
• vibration,
• germanium_sulfide,
• ancient_wisdom,
• roof_top,
• hand,
• mixed_soil,
• oil_coke,
• detergent,
• grime,
• silicon_nitride,
• calculus,
• autoimmune_disease,
• transmission,
• plastic,
• ornament,
• crown_molding,
• oval,
• farsi,
• poverty,
• various_metal,
• fact,
• ocean_scene,
• mathematics,
• silver,
• blunt_end,
• glossy_paint,
• russian_literature,
• algebra,
• wax,
• spine,
• instructional_design,
• polar_compound,
• geometry,
• sex_education,
• vagina,
• hebrew,
• medical_waste,
• large_river,
• fundamentalism,
• hip_corner,
• molybdenum,
• autoimmune_disorder,
• fencing,
• peripheral_bronchus,
• eyes,
• rf,
• straw,
• sweet_food,
• job,
• institutional_role,
• axle,
• newton_laws,
• old_adhesive,
• fibre,
• coal,
• science_textbook,
• attack,
• maintenance,
• heterozygous_structure,
• resource,
• marine_environment,
• water,
• bed_legs,
• apprehension,
• gel_cap,
• boredom,
• small_booklet,
• sickle-cell_anemia,
• generalization,
• school_yard,
• petroleum_coke,
• upper_lip,
• change,
• chinese,
• melanoma,
• artificial_colors,
• sexual_behavior,
• silicate_brick,
• math_test,
• minor_construction,
• end,
• color_graphics,
• hole,
• coil,
• framing,
• floor_collapse,
• untreated_polyethylene,
• human_face,
• value_change,
• back_legs,
• agricultural_biomass,
• black_hole,
• car,
• minute_part,
• high_vibration,
• windscreen,
• snow,
• drought_tolerance,
• split_cap,
• stairs,
• lip,
• skull_base,
• inclined_plane,
• witchcraft,
• foil,
• rocky_terrain,
• calcite,
• diabetes,
• urdu,
• shirt_collar,
• silicone,
• nylon,
• czech,
• cable_vault,
• skin,
• back_pain,
• cupboard,
• upper_arms,
• grammar,
• waste_wood,
• enemy_fire,
• bowel,
• interior_scene,
• lymphoma,
• chlorobenzene,
• mountainous_area,
• shame,
• urban_area,
• design,
• risk_problem,
• building,
• small_vessel,
• clothing,
• camp_grounds,
• intense_fear,
• curved_work,
• glass_mosaic,
• contempt,
• unemployment,
• cardboard,
• underwater_area,
• racial_harassment,
• tumor,
• soft_shelter,
• bottom,
• under_eyes,
• baked_sand,
• hypertension,
• toilet,
• coffee_stain,
• lebanon_war,
• suspension,
• wheel,
• multiple_myeloma,
• resinous_redwood,
• biology,
• metal_oxide,
• ring,
• bag,
• jacket,
• collar,
• bereavement,
• carbonate,
• waste_collection,
• legal_document,
• aggression,
• paste,
• quartz,
• overcoat,
• powder_coat,
• wifi_component,
• deception,
• boiler_breakdown,
• relations,
• ethylene,
• silk,
• flight,
• pit,
• computer,
• vertical_screen,
• cystic_fibrosis,
• oven_door,
• plumbing,
• international_law,
• chronic_rheumatism,
• citizen_complaint,
• accusation,
• diamond_problem,
• weight_training,
• hospitalization,
• nonrigid_motion,
• calcium_fluoride,
• church,
• differential_assembly,
• ostrich_egg,
• shaft,
• hydraulic_oil,
• plaster,
• reflection,
• vertical_cave,
• video,
• farming,
• physical_attack,
• homesickness,
• mall,
• fuzz,
• fly_screen,
• door,
• hurt,
• starch,
• engine,
• zirconia,
• powder,
• mania,
• food_issue,
• super_cobalt,
• carbon,
• crown-jewels_issue,
• substance_use,
• basement_car,
• aluminum-foil_tray,
• urban_center,
• armchair,
• back_yard,
• butter,
• tungsten,
• tyre,
• silks,
• oil_law,
• column,
• persian,
• matrix,
• asphalt_compound,
• window,
• car_wreck,
• corn_sweetener,
• adoption,
• higher_math,
• chalky_soil,
• panic,
• uneven_ground,
• elevator_pit,
• painted_metal,
• ground,
• primer,
• despair,
• chemical_waste,
• fruit,
• basilar_apex,
• newspaper,
• sexual_feelings,
• duct,
• crowd_scene,
• card,
• aluminum,
• photograph,