Ключевые слова: alert, attention, background, beware, biohazard, black, button, caution, chemical, danger, dangerous, death, design, electricity, explosive, flammable, grunge, hazard, icon, industry, information, label, mark, nuclear, poison, protect, radiation, radioactive, red, risk, safety, security, set, sign, signal, skull, stop, symbol, toxic, traffic, triangle, voltage, warning, web, yellow,