Ключевые слова: accident, advice, alert, attention, background, beware, bucket, building, careful, caution, clean, cleaner, cleanup, color, danger, equipment, fall, floor, graphic, hallway, hazard, icon, image, information, interior, lobby, maintenance, modern, mop, nobody, notice, object, plastic, precaution, prevention, reflection, risk, safety, sign, signal, slide, slip, slippery, stairs, surface, symbol, warning, wet, work, yellow,