Simple categories matching empty:

• structure,
• equipment,
• container,
• box,
• array,
• body,
• drive,
• thing,
• space,
• area,
• surface,
• item,
• vessel,
• pleasure,
• tin,
• jar,
• bottle,
• zone,
• package,
• building,
• tank,
• room,
• receptacle,
• vehicle,
• object,

Members with property empty:

• drum,
• flask,
• floppy-disk_drive,
• background,
• butter_tub,
• match_box,
• curd_pot,
• mug,
• flower_pot,
• milk_container,
• aircraft,
• house,
• surface,
• bottle,
• bulk_bag,
• jar,
• entry_hall,
• empty_bottle,
• shoe_box,
• body_cavity,
• lock,
• storage_barrels,
• box,
• canister,
• plastic_box,
• mouthwash_bottle,
• beaker,
• macaroni_box,
• scar,
• orange-juice_carton,
• free_surface,
• empty_pallet,
• flowerpot,
• cup,
• launderette,
• bucket,
• crystal_imperfection,
• pipe,
• vase,
• herbicide,
• candy_tin,
• nursery_pot,
• bin,
• candy_box,
• motor-oil_drum,
• hill,
• table,
• stream,
• ballast_tank,
• roads,
• large_beaker,
• glory,
• banana_box,
• shampoo_bottle,
• abutment,
• position,
• compact,
• light,
• icecream_container,
• paint,
• mug_cosmetic,
• turf,
• center,
• glass,
• cracker_box,
• wide_street,
• empty_string,
• shoebox,
• npc_home,
• registry_hole,
• hamper,
• barge,
• hollow_log,
• automotive_fluid,
• bowls,
• open_field,
• parking_garage,
• tank,
• oil,
• connected_pore,
• bath_room,
• collection_system,
• crate,
• void,
• lighter,
• appliance_box,
• milk_bottle,
• pore,
• wardrobe_box,
• barrels,
• zero_number,
• thin_spline,
• reflection,
• tin,
• potential_space,
• sphere,
• cavity,
• tray,
• office,
• cardboard_box,
• apc,
• windows,
• paint_tin,
• factory,
• break_room,
• industrial_site,
• corner,
• wealth,
• shelf,
• resorption_cavity,
• facial-tissue_box,
• garage,
• pet_bottle,
• pet-food_bowls,
• oat_box,
• gold_room,
• side,
• multipurpose_room,
• tissue_box,
• bean_tin,
• milk_jug,
• can,
• mount,
• oatmeal_container,
• lipstick_case,
• lakeside_cabin,
• bowl,
• vial,
• shipping_tank,
• table_top,
• medicine_bottle,
• pizza_box,
• milk_carton,
• classroom,
• plastic_bottle,
• mail_sack,
• styrofoam_bowls,
• ampoule,
• spacecraft,
• dvd_drive,
• ice-cream_basket,
• cargo_van,
• beverage_bottle,
• end_zone,
• check_box,
• mantelpiece,
• fish_aquarium,
• glass_jar,
• food_package,
• large_pan,
• resin_bottle,
• salt_container,
• glasses,
• fame,
• peanut-butter_jar,
• caulk_tube,
• glass_bottle,
• armory,
• case,
• margarine_tub,
• auditorium,
• clothing,
• aspirin_bottle,
• storage_jar,
• multiple_space,
• carton,
• carboy,
• container,
• pit,
• soup_tin,
• stable,
• spray_bottle,
• crypt,
• warehouse,
• drive,
• yoghurt_cup,
• solvent,
• cleaners,
• airplane_hangar,
• american_west,
• sleeve,
• season_building,
• plate,
• anger,
• yogurt_tub,
• pail,
• birdbath,
• bag,
• wall,
• large_flowerpot,