Ключевые слова: bellboy, building, built, business, carpet, clean, cleaner, commercial, corridor, day, design, domestic, door, dust, dusting, empty, entrance, equipment, exit, floor, grey, hall, hallway, home, hoover, hose, hotel, house, housework, hygienic, indoors, inside, interior, machine, modern, nobody, occupations, office, perspective, room, routine, service, travel, vacuum, vacuuming, vanishing, wall,