Ключевые слова: abstract, alarm, alert, area, art, attention, background, banner, beware, board, careful, caution, concept, danger, design, flat, frame, graphic, hazard, icon, illustration, important, information, internet, isolated, label, loudspeaker, message, note, notice, pay, please, point, priority, problem, rectangle, red, risk, road, safety, security, shape, sign, sticker, symbol, text, warning, white, word,