Modifiers matching obstruction:

• physical,
• cooler,
• tall,
• permanent,
• level,
• major,
• fixed,
• vertical,
• taller,
• terrestrial,
• hard,
• solid,
• low,
• additional,
• temporary,
• underwater,
• artificial,
• mechanical,
• visual,
• smaller,
• clear,
• nearby,
• urethral,
• hazardous,
• under,
• nasal,
• environmental,
• overhead,
• removable,
• hydraulic,
• subsurface,
• internal,
• underground,
• local,
• bigger,
• larger,
• movable,
• immovable,
• isolated,
• up,
• over,
• external,
• structural,
• unusual,
• past,
• indoor,
• electrical,
• dense,
• multiple,
• short,
• surrounding,
• significant,
• elongated,
• layer,
• minor,
• horizontal,
• featureless,
• natural,
• spatial,
• outdoor,
• opaque,
• virtual,
• geographic,
• relevant,
• lighted,
• linear,
• lateral,
• discrete,
• insurmountable,
• raised,
• adjacent,
• large,
• irregular,
• typical,
• topical,
• small,
• impenetrable,
• visible,
• metal,
• rigid,
• current,
• hidden,
• common,
• upright,
• simple,

Simple categories matching discrete:

• system,
• substance,
• geometry,
• unit,
• emotion,
• process,
• disorder,
• object,
• entity,
• knowledge,
• concept,
• event,
• activity,
• times,
• project,
• conveyance,
• transformation,
• article,
• symmetry,
• request,
• elements,
• input,
• particle,
• surface,
• fuel,
• taxon,
• controller,
• medium,
• location,
• level,
• item,
• discipline,
• portion,
• amount,
• variable,
• information,
• field,
• decision,
• affection,
• switch,
• attribute,
• shape,
• camera,
• phase,
• choice,
• element,
• constraint,
• step,
• hardware,
• transactions,
• service,
• subset,
• market,
• category,
• domain,
• devices,
• signal,
• data,
• circuitry,
• food,
• fluid,
• component,
• syndrome,
• character,
• thing,
• actuator,
• module,
• host,
• area,
• support,
• model,
• resource,
• quantity,
• measure,
• formation,
• phenomenon,
• facility,
• condition,
• casting,
• skill,
• semiconductor,
• period,
• disturbance,
• map,
• communications,
• image,
• task,
• cell,
• ability,
• sensor,
• piece,
• mind,
• obstruction,
• institution,
• community,
• act,
• receptor,
• space,
• defect,
• cause,
• asset,
• zone,
• option,
• point,
• feature,
• matter,
• sequence,
• sample,
• marker,
• symbol,
• band,
• time,
• movement,
• individual,
• package,
• illness,
• cue,
• organelle,
• sign,
• device,
• pattern,
• commodity,
• occurrence,
• action,
• problem,
• dose,
• connection,
• values,
• display,
• mathematics,
• body,
• topic,
• type,
• sphere,
• factor,
• control,
• molecule,
• dimension,
• intervention,
• sector,
• change,
• solid,
• policy,
• volume,
• interval,
• subject,
• characteristic,
• copolymer,
• circuit,
• output,
• detector,
• product,
• material,
• group,
• conductor,
• minority,
• meaning,
• part,
• spectrum,
• program,
• industry,
• form,
• organ,
• trait,
• aggregation,
• container,
• equipment,
• assets,
• building,
• grain,
• state,
• population,
• collection,
• property,
• function,
• set,
• structure,
• value,
• artifact,