Ключевые слова: age, aged, buffing, business, busy, caretaker, caucasian, clean, clean commercial, cleaner, cleaning, cleanliness, commercial, corridor, detergent, employed, equipment, floor, floor machine, forties, full length, hall, indoors, industrial, isolated, job, machine, man, mid, middle, occupation, office, person, polisher, polishing, professional occupation, self, uniform, washing, white, working, yellow,