Simple categories matching clean:

• floor,
• ground,
• wastewater,
• item,
• surface,
• activity,
• supply,
• fuel,
• contaminant,
• area,
• container,
• material,
• waterway,
• mixer,
• hydrocarbon,
• location,
• metal,
• object,
• equipment,
• air,
• article,
• vessel,
• residue,
• sand,
• stain,
• instrument,
• clothing,
• furniture,
• environment,
• facility,
• comestible,
• club,
• fixture,
• paper,
• linen,
• component,
• board,
• tubing,
• gutter,
• textile,
• pollutant,
• lake,
• fish,
• food,
• soil,
• drape,
• sediment,
• waste,
• medium,
• water,
• corpus,
• production,
• atmosphere,
• apparel,
• cloth,
• service,
• hay,
• deposit,
• thing,
• industry,
• fluid,
• seed,
• technology,
• structure,
• salt,
• jewel,
• meat,
• liquid,
• audio,
• abrasive,
• effort,
• cylinder,
• veggie,
• territory,
• design,
• inside,
• procedure,
• grain,
• jar,
• green,
• utensil,
• part,
• product,
• gem,
• substrate,
• screen,
• stone,
• piece,
• sport,
• aggregate,
• sample,
• artifact,
• gas,
• vegetable,
• garment,
• business,
• fun,
• fiber,
• fabric,
• energy,
• loan,
• feature,
• system,
• lettuce,
• bones,
• conduit,
• appliance,
• bird,
• gemstone,
• bedding,
• amp,
• work,
• line,
• particle,
• tool,
• solvent,
• dressing,
• plate,
• semiconductor,
• source,
• brush,
• receptacle,
• organs,
• building,
• property,
• place,
• bottle,
• device,
• laundry,
• runoff,
• string,
• animal,
• aroma,
• solid,
• matter,
• extra,
• space,
• debris,
• room,
• electricity,
• ingredient,
• machine,
• uniform,
• substance,

Members with property clean:

• jug,
• portland_stone,
• wall,
• biomass_energy,
• glass,
• smooth_floor,
• throttle_plate,
• human_skin,
• sheet,
• floor,
• workbench,
• wood,
• photo,
• industrial_equipment,
• silicon,
• washcloth,
• metal_trolley,
• windows,
• coal,
• brick_wall,
• tray,
• sink,
• paper,
• counting_tray,
• hearth,
• shower,
• glass_rod,
• x-ray_processor,
• chassis_bolt,
• clear_soup,
• furniture,
• glass_tank,
• hose,
• interview,
• suitable_cotton,
• infusion_pump,
• behind,
• tank,
• cheese_cloth,
• demijohn,
• small_ruler,
• bath,
• gown,
• campus,
• laboratory_medium,
• sulfur,
• unbleached_cotton,
• lap_robe,
• straw,
• office_paper,
• liver,
• school_desk,
• pediatric_clinic,
• fingernail_clipper,
• vacuum,
• concrete_floor,
• acetate,
• door_bottom,
• oat,
• then_bottle,
• microwave,
• lens,
• wax_jacket,
• centrifuge_bucket,
• methanol,
• alcohol,
• cycle_computer,
• log,
• sidewalk,
• muslin,
• suede,
• breadboard,
• gardening_tool,
• wool,
• ring_groove,
• dish_pan,
• reservoir,
• co2,
• fresh_water,
• piston,
• art_studio,
• household_goods,
• wind,
• fissure,
• liquid_helium,
• mahogany,
• real_vanilla,
• side,
• propylene_refrigeration,
• sport,
• knife,
• water_pitcher,
• atomic_nucleus,
• soap,
• door_knob,
• paving,
• porous_surface,
• commode,
• cooling_water,
• high_gloss,
• tin,
• pipette,
• equipment,
• coil,
• mixed_papers,
• rectal_sleeve,
• raised_table,
• towel,
• woolen_sweater,
• culinary_tool,
• examination_table,
• ceiling,
• irrigation_canal,
• light_diffuser,
• fish_roe,
• draft,
• toilet,
• electric_power,
• inert_gas,
• pan,
• shoestring,
• birdbath,
• instrument_air,
• pocket,
• bucket,
• hemp,
• hobart_kettle,
• teapot,
• black_cherry,
• door_sills,
• sea_salt,
• barrier_curtain,
• light,
• fat_trimmings,
• rooftop_runoff,
• concrete_panel,
• eyeglasses,
• barrels,
• modern_office,
• decanter,
• river_rock,
• ice-cream_carton,
• mechanical_washer,
• body_oil,
• clothes,
• paraffin,
• banner,
• silks,
• conduit,
• cider,
• bag,
• potable_water,
• litter,
• beef,
• skin_oil,
• waxed_paper,
• clean_telephone,
• metal_roof,
• dentist_office,
• culvert,
• argon,
• cauliflower,
• shelf,
• cover,
• film,
• cotton_gauze,
• ventilator,
• shellfish,
• cardboard_carton,
• dairy_equipment,
• scanner,
• fabric,
• countertop,
• nut,
• fibreglass,
• mica,
• drain_rock,
• retail_counter,
• dish,
• handrail,
• recreational_area,
• metal_forceps,
• cafeteria,
• play_sand,
• power,
• patient_chair,
• vinegar,
• ore,
• clean_air,
• plastic_scoop,
• celery,
• highchair_tray,
• plastic_grocery,
• slide,
• uniform,
• plaster,
• nitrogen_gas,
• nursing-care_home,
• cheesecloth,
• packaging,
• chamber_pot,
• quart_jar,
• solar_light,
• wicker,
• iron_cylinder,
• cloth,
• awning,
• agriculture,
• bed_pan,
• utility_area,
• old_diaper,
• trim,
• vagina,
• iron,
• corner,
• stream_water,
• washer,
• patio,
• pipe,
• kitchen_implement,
• lamb,
• pottery,
• marble,
• production_shop,
• skin,
• filling_room,
• disk-drive_surface,
• apron,
• bumper,
• chromium,
• land_surface,
• plumbing_pipe,
• clean_coal,
• cycle,
• bedside_table,
• commercial_kitchen,
• edger,
• sailing,
• weak_oxide,
• tool,
• pillow_case,
• shoe_brush,
• plate,
• broken_bottle,
• cardboard,
• fridge_door,
• large_handkerchief,
• tourism,
• rain_puddle,
• acetone,
• vehicle_interior,
• steel,
• gym,
• special_spoon,
• health_office,
• outdoor_pool,
• metallic_tool,
• pitcher,
• razor,
• appliance,
• stainless-steel_bowl,
• field,
• bridle,
• vegetable_bin,
• concrete_wall,
• carpeting,
• frame,
• pond,
• production,
• laundry,
• gourd,
• housing,
• building_wall,
• hotel,
• magazine,
• camera,
• shifter,
• concrete_driveway,
• high-tech_industry,
• track,
• oven,
• tiller,
• supermarket,
• inside_drawers,
• semen,
• rug,
• cap,
• wax,
• glass_beaker,
• bench,
• yard_debris,
• curtain,
• grill,
• changing_area,
• plastic_plate,
• plastic_cover,
• denim,
• car_body,
• seal,
• theatre_clothing,
• aluminium,
• velvet,
• duck,
• bedpan,
• outreach,
• motor_sprocket,
• shop_dirt,
• styrofoam_bowls,
• caviar,
• embedded_dirt,
• shell,
• clay,
• handkerchief,
• incubator,
• pure_water,
• bedspread,
• precious_stone,
• wood_deck,
• ottawa_sand,
• computer,
• helium,
• skirt,
• footpath,
• grain,
• quartz_liner,
• behind_ear,
• wind_energy,
• conveyor-belt_links,
• carbon,
• air_vent,
• couple_reservoir,
• ornament,
• metal_sheet,
• restroom_floor,
• ice,
• keyboard,
• glass_slide,
• floor_machine,
• gallon_jug,
• car,
• couch,
• lunch_box,
• nuclear_power,
• mushroom,
• icecream_container,
• wooden_deck,
• untreated_wood,
• onyx,
• sawdust,
• aluminum,
• stucco,
• glass_jar,
• oil,
• mouthpiece,
• popcorn,
• carafe,
• clean_towel,
• glove,
• counter_top,
• sock,
• closet_floor,
• specialty_clinic,
• egg_room,
• bypass_valve,
• shower_head,
• ocean,
• waste_water,
• pot-plant_saucer,
• methane,
• desk,
• phone,
• wine_vat,
• printer_he,
• stretcher,
• skin_biopsy,
• thick_gauze,
• tarmac,
• wash_basin,
• hotel_lobby,
• clean_bench,
• graveyard,
• fuel-cell_technology,
• blind,
• toy,
• kitchen,
• tramp_material,
• sporting_arena,
• upholstery,
• auto,
• whole_grain,
• personal_cheque,
• timothy,
• main,
• syrinx,
• disposal,
• mutton,
• plant,
• plastic_sheeting,
• cord,
• roller,
• ice_core,
• spoon,
• craft,
• fresh_vegetable,
• hat,
• counter_surface,
• rainwater,
• belt,
• water_treatment,
• civil_water,
• road_tar,
• capacity_building,
• cabinet,
• milk_bottle,
• mask,
• bedding,
• curb_inlet,
• brass_fixture,
• gauze_pad,
• synthesis_gas,
• tabletop,
• synthetic_fuel,
• polystyrene,
• coral,
• brass_railing,
• chalcopyrite_powder,
• lead,
• enamel,
• rock-salt_king,
• spatula,
• painted_area,
• window,
• basket,
• scalpel_blade,
• oak,
• diagnostic_curettage,
• cd_recording,
• transportation,
• tuna,
• foot,
• white_bedspread,
• antarctic_ice,
• woody_material,
• window_casing,
• dish_machine,
• gun_part,
• wire,
• basin,
• beaded_item,
• chains,
• silica_sand,
• bathroom_mirror,
• card,
• garden,
• tv_screen,
• industrial_effluent,
• cage_floor,
• surgical_instrument,
• drapery,
• scissors,
• plastic_bin,
• stove_top,
• laryngeal_mirror,
• mooring,
• gas,
• boat_sail,
• automobile_windshield,
• fiberglass,
• nitrogen,
• manhole,
• machinery,
• organic_cotton,
• silver,
• kitchenware,
• oak_beam,
• piece,
• cement,
• solar_panel,
• cubby,
• river_water,
• existing_roadway,
• bowl,
• milk_jug,
• container,
• hood,
• olefin,
• temple,
• athletic_uniform,
• cafeteria_table,
• city_water,
• home_computer,
• book,
• fridge,
• bottle,
• boat,
• small_business,
• semiconductor_factory,
• lcd,
• endoscope,
• pool,
• concrete,
• lounger,
• tile,
• blank_newsprint,
• hydrogen,
• tableware,
• soft_furnishing,
• family,
• home,
• salt,
• turquoise,
• crushed_rock,
• block_tin,
• carpet_tile,
• juice_jug,
• gasket,
• pickle_jar,
• clean_handkerchief,
• pot,
• sr,
• mouse_pad,
• metal_strip,
• freezer,
• copper,
• golf-club,
• dishwasher,
• cloth_napkin,
• stream_pool,
• tarpaulin,
• door,
• tablecloth,
• motorbike,
• notebook,
• cleaning_cloth,
• concrete_sand,
• shaft,
• lense,
• couple_sheet,
• trolley_top,
• swimming-pool_water,
• food,
• chicken_bones,
• polyethylene_sheet,
• rollerblading,
• glass_mirror,
• painted_wall,
• printer_head,
• screen,
• sealing_water,
• mold,
• stairway,
• table_top,
• drinking_cup,
• driveway,
• game_bag,
• small_washroom,
• amethyst,
• developing_machine,
• cot,
• fitting,
• product,
• switch_room,
• cylinder_sleeve,
• bronchoscope,
• cloth_diaper,
• pile_fabric,
• rag,
• stream,
• lobby,
• aircraft,
• mattress,
• traffic_tunnel,
• saddle,
• hospital,
• organic_egg,
• wheel_chair,
• egg,
• ceramic_tile,
• linoleum,
• single_crystal,
• drainboard,
• ethane,
• eds,
• nurse_office,
• lemon,
• propane,
• sand_stone,
• comforter,
• hydroelectricity,
• cupboard_shelf,
• inside,
• bird_excrement,
• buffer,
• deep_cavity,
• uncarpeted_basement,
• latex,
• cart,
• jar,
• razor_blade,
• piston_dome,
• office,
• laundry_room,
• earth,
• newspaper,
• light_fixture,
• rock_catchment,
• toaster,
• flux,
• flatware,
• renewable_energy,
• throttle_body,
• concrete_product,
• clipper,
• main_unit,
• hard_surface,
• railing,
• polythene_rod,
• carrot,
• building,
• collectible,
• water,
• electric_vehicle,
• disassembly_mat,
• utility_room,
• natural_gas,
• bathroom_faucet,
• bush,
• denture,
• pool_deck,
• sterile_gauze,
• coke,
• broccoli,
• plastic,
• clean_linen,
• minibar_door,
• fine_silks,
• area,
• pump,
• south-platte_river,
• charcoal,
• roof_vent,
• timber,
• scroll_pump,
• strawberry,
• sink_top,
• refrigerator,
• native_soil,
• polymer,
• cd,
• rocky_stream,
• washbowl,
• hotel_retail,
• plastic_jar,
• window_sill,
• pajama,
• irregular_surface,
• lp,
• remote_region,
• printmaking,
• bowls,
• chocolate,
• service_business,
• part,
• camping_trailer,
• sport_center,
• turkish_towel,
• silicone_oil,
• gasoline,
• porcelain,
• counter,
• garment,
• old_coating,
• pvc,
• watch,
• polished_masonry,
• car_bumper,
• house_siding,
• brush,
• industrial_scrap,
• trash_bag,
• gold,
• river,
• kerosene,
• satin,
• calculator,
• shower_door,
• paw,
• photovoltaic_energy,
• side_cover,
• filter,
• sensor,
• pasture,
• remote,
• special_gas,
• loam,
• mesh,
• head_gear,
• fork,
• shell_fragment,
• chair,
• watch_strap,
• formica_counter,
• headboard,
• chrome_fixture,
• kitchen_roll,
• leaf,
• gallon_jar,
• charcoal_cordwood,
• silicon_substrate,
• seasoned_box,
• mixed_paper,
• glove_box,
• water_energy,
• cherry,
• masonry_heater,
• popular_type,
• pillowcase,
• mat,
• food_container,
• deck,
• gauze_sponge,
• corrugated_paper,
• tungsten,
• rayon,
• bones,
• muscular_tissue,
• stainless-steel_shelf,
• school,
• pork,
• cell_phone,
• washbasin,
• restroom,
• nook,
• cameo,
• tractor,
• glasses,
• glass_bottle,
• vegetative_rubbish,
• personal_loan,
• magnesium,
• acrylic,
• fresh_seawater,
• silicon_wafer,
• tweezer,
• jewelry,
• concrete_slab,
• food_industry,
• fence,
• conductive_silicone,
• rain,
• narration,
• trailer,
• linen,
• stone,
• stove,
• aluminum_zinc,
• pendant_light,
• makeup_brush,
• raw_cotton,
• trolley,
• chemical,
• yard,
• fender,
• kettle,
• body,
• white_metal,
• medical_gas,
• street,
• stove_filter,
• long_lake,
• rock,
• plastic_cup,
• toilet-bowl_hinge,
• oat_bran,
• path,
• breast_surgery,
• vehicle,
• carbon_film,
• porch,
• washing_curtain,
• transparency_film,
• organic_material,
• aerator,
• wood_fence,
• waterproof_watch,
• drywall,
• cup,
• body_panel,
• personal_hygiene,
• platinum,
• grime,
• stair_railing,
• lampshade,
• cat_litter,
• wood_floor,
• window_sills,
• roof_runoff,
• drawer,
• cooker_top,
• piano,
• indoor_thumbtack,
• peanut-butter_jar,
• baby_bottle,
• semiconductor,
• debris,
• vegetable,
• bright_colors,
• flannel,
• light_switch,
• solar_power,
• cotton,
• swimming,
• compressor_shell,
• undershirt,
• kosher_salt,
• polymer_brush,
• map,
• lactic_acid,
• trough,
• steps,
• clean_water,
• blind_hole,
• laboratory-bench_top,
• tent,
• cushion,
• wheelchair,
• instrument,
• stoppered_jug,
• rv,
• pillow,
• perfume_bottle,
• mirror,
• toothbrush,
• plastic_pail,
• bolt,
• glass_board,
• fixture,
• tar,
• concrete_flooring,
• corridor_floor,
• tongs,
• scoop,
• margarine_dish,
• leather,
• serviette,
• butane,
• toilet_brush,
• wood_waste,
• brass,
• basement,
• specimen_cup,
• heat-exchanger_elements,
• plastic_bowl,
• mace_head,
• pond_liner,
• margarine_tub,
• acoustic_amp,
• roof,
• grating,
• bookbinding,
• brine,
• crushed_stone,
• glass_plate,
• carton,
• garage,
• television_studio,
• crack,
• peridot,
• brick,
• pearl,
• bin,
• barley_wheat,
• clean_sheet,
• small_saucepan,
• rain_water,
• church,
• table_cover,
• poultry,
• food_stain,
• sun_energy,
• lint,
• valve,
• jam_jar,
• padded_bandage,
• hot_grill,
• valve_elements,
• table,
• hard_floor,
• jail_jumpsuit,
• emerald,
• instrument_packing,
• sand,
• egg_box,
• mastectomy,
• woodwork,
• bronze,
• painted_steel,
• scraper,
• clothing,
• pure_cellulose,
• connection,
• plastic_bucket,
• gutter,
• solar_electricity,
• resin,
• dryer,
• molding,
• glassware,
• utensil,
• pa,
• bathroom_facility,
• light_petroleum,
• radio_button,
• tool_box,
• hinge_area,
• classroom,
• clean_cup,
• baby_romaine,
• curly_endive,
• bathtub,
• electrostatic_precipitator,
• washed_gravel,
• pail,
• surface_film,
• lettuce,
• minibar_fridge,
• clean_piece,
• hip_arthroplasty,
• bathroom_sink,
• kitchen_goods,
• fish,
• engine,
• automobile,
• air,
• attic,
• masonry,
• textile,
• anthracite,
• carpeted_flooring,
• metal,
• cupboard,
• toxic_waste,
• boat_hull,
• run,
• dial,
• information_kiosk,
• automotive_part,
• copper_tubing,
• cookware,
• clay_pot,
• cola,
• chicken,
• shoes,
• blanket_cylinder,
• lead_frame,
• nickel,
• chrome,
• turkey,
• paint,
• painting,
• vinyl_siding,
• natural_surface,
• opal,
• sterile_water,
• coverall,
• plastic_part,
• knot,
• bath_room,
• cardboard_box,
• cork,
• block,
• head,
• oxide,
• clean_board,
• painted_surface,
• exercise_equipment,
• surfing,
• asphalt,
• renewable_electricity,
• tub,
• storage_bag,
• pulverised_limestone,
• lake_front,
• back_deck,
• bauxite,
• electricity,
• tubing,
• dixie_mixer,
• napkin,
• centrifuge,
• insoluble_clay,
• flexible_hose,
• large_jar,
• bedclothes,
• molybdenum,
• semiconductor_substrate,
• slate,
• bathroom,
• calcium,
• drape,
• surgical_area,
• gauze,
• dirt,
• old_curtain,
• dishcloth,
• gravel,
• motor,
• corrugated_iron,
• dry_nitrogen,
• cornmeal,
• linoleum_floor,
• silk,
• bath_tub,
• nylon,
• wtc_dust,
• animal_mess,
• removable_side,
• paper_handkerchief,
• milk,
• work_glove,
• garage_floor,
• public_phone,
• clutch_shoes,
• spectacles,
• solar_energy,
• electrical_equipment,
• mini_blind,
• ag,
• jacquard,
• faucet,
• floor_weekly,
• pharmaceutical,
• restaurant,
• geothermal_energy,
• equipment_trolley,
• windshield,
• recreational_service,
• tv,
• nonmetallic_surface,
• old_toothbrush,
• jewellery,
• computer_room,
• lunch_trash,
• gypsum_wallboard,
• rice,
• sod,
• board,
• several_layer,
• bell,
• teeth_brushing,
• blanket,
• baby_warmer,
• elevator_button,
• keyboard_amp,
• bed,
• formica_tabletop,
• undercarriage,
• tarp,
• cell,
• cabbage,
• grape,
• boot,
• wet_paper,
• cement_floor,
• emission_control,
• plasma_screen,
• envelope,
• sewing_table,
• top_wall,
• ceiling_fan,
• kitchen_counter,
• fish_bones,
• silicone,
• paper_tube,
• hydrogen_energy,
• scrap_paper,
• cobweb,
• resting_area,
• mine,
• collage_painting,
• polyester,
• cutlery,
• large_molecule,
• study,
• mud,
• play_mat,
• ceramics,
• arm,
• brake_soil,
• grease,
• wallboard,
• plastic_jug,
• sewage,
• timothy_hay,
• oven_door,
• lake,
• feed_line,
• side_glass,
• silicone_fluid,
• pencil,
• antifreeze,
• clean_room,
• soil,
• coat,
• geometric_pattern,
• aluminum_siding,
• maple,
• ham,
• motor-oil_container,
• carpet,
• vial,
• scarf,
• compressed_air,
• comb,
• closet,
• forceps,
• pressure_vessel,
• drink_stain,
• cooling_circuit,
• peeler,
• plywood,
• renewable_power,
• heart,
• decorative_piece,
• irons,
• flooring,
• polyurethane_glove,
• bottle_brush,
• zinc,
• ash,
• biomass,
• dust,
• button,
• chill_room,
• primary_bucket,
• light_fuel,
• underwear,
• telephone,