Ключевые слова: advice, alarm, alert, area, arrow, attention, beware, bolt, careful, caution, danger, dangerous, death, electric, electrical, electricity, energy, forbidden, hazard, high, icon, illustration, industrial, information, isolated, label, lightning, metal, notice, poster, power, protect, protection, risk, safety, security, shock, sign, signs, symbol, threat, thunder, triangle, vintage, volt, voltage, warning, yellow, zone,