Modifiers matching difficulty:

• regulation,
• emotional,
• related,
• psychological,
• persistent,
• important,
• mathematical,
• operational,
• extreme,
• particular,
• physical,
• serious,
• personal,
• educational,
• external,
• academic,
• behavioural,
• financial,
• commercial,
• psychiatric,
• practical,
• perceptual,
• underlying,
• computational,
• invisible,
• natural,
• nutritional,
• prevalent,
• extraneous,
• social,
• anatomical,
• developmental,
• respiratory,
• conceptual,
• reproductive,
• periodic,
• experienced,
• hormonal,
• progressive,
• surgical,
• unexpected,
• motor,
• neuropsychiatric,
• administrative,
• logistical,
• real,
• cognitive,
• traditional,
• visual,
• technological,
• smaller,
• basic,
• home,
• significant,
• concurrent,
• common,
• internal,
• temporary,
• behavioral,
• severe,
• mechanical,
• chronic,
• special,
• mental,
• stable,
• linguistic,
• possible,
• maternal,
• unforeseen,
• somatic,
• minor,
• sensory,
• subjective,
• clinical,
• acute,
• single,
• neurological,
• spiritual,
• interpersonal,
• unusual,
• typical,
• technical,
• stressful,
• structural,
• ongoing,
• legal,
• economic,
• habitual,
• experimental,
• functional,
• leaning,
• environmental,
• everyday,
• sexual,
• domestic,
• local,
• secondary,
• unanticipated,
• parental,
• major,
• extra,
• past,

Simple categories matching particular:

• commodity,
• topic,
• item,
• worker,
• thing,
• substance,
• point,
• thought,
• institution,
• shellfish,
• waste,
• fastener,
• material,
• gathering,
• format,
• activity,
• deposit,
• category,
• tissue,
• class,
• marker,
• group,
• mineral,
• sector,
• site,
• mammal,
• context,
• tree,
• vegetable,
• security,
• means,
• section,
• ingredient,
• genre,
• node,
• language,
• part,
• component,
• insurance,
• ware,
• possession,
• ground,
• content,
• case,
• clothing,
• work,
• interest,
• medium,
• difficulty,
• use,
• latitude,
• power,
• gas,
• condition,
• subject,
• script,
• apparatus,
• art,
• relationship,
• country,
• individual,
• chemical,
• value,
• weapon,
• issue,
• formation,
• load,
• fluid,
• function,
• committee,
• skill,
• phobia,
• project,
• animal,
• behavior,
• installation,
• celebration,
• study,
• feature,
• virtue,
• table,
• constraint,
• action,
• facility,
• vehicle,
• attention,
• instrument,
• values,
• entity,
• customer,
• job,
• time,
• attribute,
• goal,
• suburb,
• contingency,
• phenomenon,
• beverage,
• information,
• meaning,
• form,
• measure,
• atom,
• appliance,
• field,
• layer,
• character,
• system,
• livestock,
• toy,
• transaction,
• element,
• procedure,
• carbon,
• dimension,
• aspect,
• disposition,
• discipline,
• hydrocarbon,
• way,
• map,
• output,
• practice,
• quality,
• structure,
• situation,
• organ,
• agent,
• level,
• garment,
• organization,
• illness,
• domain,
• fuel,
• drug,
• screw,
• industry,
• crime,
• idea,
• indication,
• product,
• style,
• foodstuff,
• works,
• asset,
• craft,
• food,
• device,
• outcome,
• polysaccharide,
• theme,
• pome,
• cause,
• artefact,
• plant,
• request,
• environment,
• force,
• supplier,
• building,
• wood,
• compound,
• equipment,
• area,
• school,
• piece,
• tort,
• button,
• market,
• property,
• shoes,
• matter,
• sphere,
• treatment,
• location,
• party,
• service,
• occasion,
• ministry,
• disease,
• danger,
• agency,
• trait,
• concept,
• status,
• business,
• result,
• mood,
• place,
• claim,
• carrier,
• article,
• promotion,
• surface,
• object,
• profession,
• test,
• characteristic,
• focus,
• allergen,
• program,
• fund,
• trade,
• fruit,
• disorder,
• source,
• space,
• event,
• problem,
• resource,
• document,
• container,
• pattern,
• authority,
• organisation,
• sense,
• sanction,
• metal,
• accomplishment,
• care,
• predator,
• page,
• minority,
• sport,
• task,
• process,
• plate,
• emotion,
• dish,
• organism,
• club,
• arachnid,
• state,
• line,
• investment,
• soil,