room vs clean room

Other hyponyms of room include anechoic chamber, antechamber, anteroom, entrance hall, foyer, hall, lobby, vestibule, back room, ballroom, dance hall, dance palace, bar, barroom, ginmill, saloon, taproom, bathroom, bedchamber, bedroom, chamber, sleeping accommodation, sleeping room, belfry, billiard hall, billiard parlor, billiard parlour, billiard room, billiard saloon, boardroom, council chamber, cardroom, cell, jail cell, prison cell, cell, cubicle, chamber, checkroom, left-luggage office, classroom, schoolroom, white room, cloakroom, coatroom, closet, clubroom, compartment, conference room, control room, court, courtroom, cubby, cubbyhole, snug, snuggery, cutting room, darkroom, den, dinette, dining-room, dining room, door, dressing room, durbar, engine room, engineering, floor, trading floor, furnace room, gallery, art gallery, gallery, picture gallery, greenroom, guardroom, hall, hospital room, kitchen, library, front room, living-room, living room, parlor, parlour, sitting room, locker room, lounge, waiting area, waiting room, hall, manor hall, poolroom, presence chamber, rathole, reading room, reception room, rec room, recreation room, rotunda, scriptorium, scullery, sewing room, shipping room, shower room, sick berth, sickbay, sickroom, smoking room, squad room, squad room, steam bath, steam room, vapor bath, vapour bath, storage room, storeroom, stowage, study, solarium, sun lounge, sun parlor, sun parlour, sun porch, sunporch, sunroom, surgery, television room, tv room, test room, testing room, bathroom, can, john, lav, lavatory, privy, toilet, torture chamber, sacristy, vestry, walk-in, war room, workroom.