Modifiers matching play:

• world,
• creative,
• instrumental,
• special,
• active,
• therapeutic,
• symbolic,
• unstructured,
• noisy,
• outdoor,
• interactive,
• quiet,
• strong,
• dramatic,
• rough,
• imaginative,
• free,
• indoor,
• expressive,
• psychological,
• individual,
• structured,
• motor,
• collaborative,
• defensive,
• complex,
• tactile,
• online,
• dangerous,
• literary,
• informal,
• messy,
• big,
• familiar,
• unlawful,
• sexual,
• sensory,
• preferred,

Simple categories matching indoor:

• covering,
• component,
• sport,
• problem,
• activity,
• arena,
• facility,
• coating,
• restaurant,
• food,
• furnishing,
• area,
• game,
• art,
• display,
• partition,
• animal,
• vehicle,
• substance,
• space,
• treatment,
• sound,
• housework,
• attraction,
• location,
• obstruction,
• lamp,
• event,
• exhibit,
• athletics,
• surface,
• setting,
• lighting,
• chemical,
• building,
• houseplant,
• loudspeaker,
• stadium,
• pool,
• contaminant,
• source,
• drain,
• machine,
• assembly,
• equipment,
• noise,
• application,
• exercise,
• material,
• firework,
• bird,
• work,
• pesticide,
• recreation,
• substrate,
• room,
• communication,
• use,
• celebration,
• fitting,
• tile,
• antigen,
• renovation,
• institution,
• task,
• insect,
• structure,
• plant,
• thing,
• floor,
• meeting,
• action,
• unit,
• gas,
• photograph,
• organism,
• project,
• quality,
• theatre,
• particulate,
• allergy,
• product,
• shelter,
• furniture,
• container,
• exposure,
• job,
• appliance,
• fountain,
• performance,
• housing,
• function,
• scene,
• centre,
• medium,
• establishment,
• object,
• decoration,
• party,
• fun,
• diversion,
• dog,
• device,
• particle,
• fuel,
• creature,
• antenna,
• play,
• item,
• venue,
• control,
• graphics,
• entertainment,
• site,
• course,
• atmosphere,
• wall,
• fixture,
• stuff,
• flower,
• passage,
• set,
• ornament,
• shot,
• clientele,
• lodging,
• pollutant,
• gathering,
• pet,
• allergen,
• devices,
• environment,
• enclosure,
• toy,
• air,
• installation,
• condition,
• climate,
• light,
• usage,
• support,
• pest,
• place,