Simple categories matching usable:

• area,
• system,
• energy,
• item,
• material,
• furniture,
• location,
• building,
• form,
• article,
• artifact,
• condition,
• state,
• equipment,
• suggestion,
• object,
• resource,
• fraction,
• medium,
• apparatus,
• format,
• information,
• product,
• entity,
• liquid,
• part,
• power,
• space,
• salt,
• component,
• shape,
• compound,
• symbol,
• structure,
• fuel,
• commodity,
• waste,
• stuff,
• feature,
• plaything,
• computer,

Members with property usable:

• chair,
• candle,
• furniture,
• lamp,
• papers,
• computer,
• food_stuff,
• book,
• trough,
• unused_chemical,
• panel,
• user,
• key,
• bed,
• architectural_elements,
• apparel,
• electricity,
• clothing,
• compartment,
• metal_scrap,
• display_devices,
• appliance,
• chest,
• hose,
• alcove,
• table,
• engine,
• breadboard,
• bowls,
• tile,
• bracket,
• spaceship,
• plutonium,
• lipstick,
• authorization_system,
• ceiling,
• stereo,
• steel,
• jewelry,
• solar_energy,
• server,
• cobalt,
• transport_fuel,
• special_button,
• food,
• instrumentation,
• clothes,
• shed,
• clipboard,
• paint_tube,
• oil,
• mantel,
• car,
• novel,
• interest,
• floppy,
• suspension_gear,
• refrigerator_top,
• condiment_set,
• harmonic_line,
• typewriter,
• interior_room,
• carbon,
• pushcart,
• kitchenware,
• bicycle_tire,
• dish,
• starch,
• photo,
• shoe_rack,
• garden_item,
• office,
• diaper,
• printer_ink,
• cap,
• linen,
• utility_room,
• pager,
• aluminum,
• decorative_rock,
• fur,
• scarf,
• paper,
• cis_unit,
• fixture,
• bat,
• small_toy,
• bumper,
• wood,
• pacifier,
• pellet,
• salt,
• eraser,
• gypsum,
• terminal,
• bath_product,
• armor,
• dc,
• cement,
• door,
• gravel,
• cracker,
• vase,
• small_appliance,
• sand,
• bookcase,
• goods,
• fan,
• state,
• city,
• shoes,
• furrow,
• workshop_machine,
• advisory_publication,
• fatty_acid,
• glassware,
• computer_disk,
• pulpwood,
• flag,
• glass,
• metal,
• scrap_paper,
• image_field,
• cd_rom,
• storage_container,
• vcr,
• cure_item,
• battery,
• bottle,
• mat,
• rectifier,
• building,
• equation,
• metal_salt,
• body,
• pocket,
• brick,
• staff,
• leather_bookmark,
• tv,
• ball,
• journal_cover,
• fuel_gas,
• helicopter,
• automotive_product,
• purse,
• bookmark,
• studio,
• drink,
• rear,
• photo_frame,
• xmas_ornament,
• transforming_snake,
• cpu,
• roll,
• coated_papers,
• trivet,
• closet,
• pedestrian_plaza,
• service_reminder,
• natural_uranium,
• lane,
• fridge_magnet,
• crowbar,
• zipper,
• button,
• valuable_saltpetre,
• sheet,
• belt,
• health_information,
• door_panel,
• sucrose,
• household_utensil,
• methane_gas,
• box,
• equipment,
• cd,
• bedding,
• manual,
• ornament,
• toy,
• glasses,
• side,
• computer_interface,
• dvd,
• computer_room,
• household_item,
• motor,
• car-care_product,
• printer,
• bathroom,
• polymeric_material,
• napkin,
• bird_table,
• asphalt,
• lead_source,
• contiguous_bin,
• potion,
• plate,
• car_tyre,
• cane,
• floppy_disc,
• sheet_towel,
• wire,
• office_equipment,
• packing_paper,
• address_book,
• hard_disc,
• astrological_sign,
• playground,
• park,
• desk,
• attack_wand,
• microprocessor,
• calendar,
• tire,
• gasoline,
• garage_floor,
• wine_glasses,
• skin,
• oxygen,
• specialized_format,
• glove,
• video_card,
• game,
• household_goods,
• play,
• lab,
• spread_sheet,
• solid,
• transmission,
• fixed_gun,
• statistical_information,
• pen,
• cooking_implement,
• school,
• heat,
• textile_bag,
• lid,
• limb,
• towel,
• moulding,
• workshop,
• cup,
• trunk_room,
• plaza,
• card,
• sign,
• chart_form,
• mirror_frame,
• open_state,
• synthetic_gas,
• plumbing,
• antenna,
• description,
• goblet,
• leather_wristband,
• cabinet,
• den,
• history,
• hollow_wall,
• eyeglasses,
• doll,
• fitting,
• solar_radiation,
• equipment_bag,
• repair_pad,
• thing,
• ammunition,
• rubber_sheeting,
• electronic_sign,
• robot,
• flooring,
• tableware,
• paint,
• auto_product,
• sock,
• block,
• ski,
• image,
• library,
• camera,
• uranium,
• cupboard,
• cadmium,
• apron,
• hangar,
• bubble,
• map,
• closed_state,
• sec,
• plastic,
• country,
• sheet_rock,
• methanol,
• construction_material,
• magnet,
• television,
• lead,
• hardware,
• reading_nook,
• sphere,
• cell_sheet,
• glycol_ether,
• hardwood_floor,
• floppy_diskette,
• hard_drive,
• walking_cane,
• nickel,
• paper_pulp,
• stainless,
• nitrate,
• eyes,
• gold,
• wand,
• video,
• database,
• soap,
• electronic_equipment,
• gas,
• certain_metal,
• windshield,
• protein,
• natural_gas,
• electrical_appliance,
• art,
• green_space,
• rear_axle,
• utility,
• cell_phone,
• plaster,
• compact_disc,
• direct_current,
• hat,
• lifeboat,
• carpet,
• kerosene,
• wheelbarrow,
• water,
• pillow_case,
• diskette,
• weapon,
• street_address,
• mailbox,
• flatware,
• disc,
• cone,
• courtyard,
• aluminum_fluoride,
• chemical,
• central_processor,
• lumber,
• tc,
• bandage,
• handheld_devices,
• goodwill,
• numerical_value,
• separator,
• display,
• plastic_sheet,
• radio,
• memory,
• shampoo,
• soluble_protein,
• chloride_salt,
• magazine,
• baked_goods,
• convention,
• windows,
• planter_box,
• label_stock,
• cloth,
• laundry,
• bootie,
• teleprinter_roll,
• playhouse,
• petroleum_product,
• office_paper,
• iron,
• sunlight,
• stone,
• handle,
• toothbrush,