Ключевые слова: accident, alert, attention, background, beware, bucket, building, careful, caution, clean, cleanup, danger, english, fall, floor, hallway, hazard, hotel, icon, indoors, industrial, interior, janitor, janitorial, lobby, maintenance, modern, mopped, notice, plastic, precaution, prevention, risk, safety, sign, signal, slip, slippery, symbol, tile, trash, warning, wet, yellow,