Ключевые слова: alert, arrow, attention, background, beware, caution, danger, dangerous, electric, electrical, electricity, energy, forbidden, grunge, grungy, hazard, high, highvoltage, icon, industrial, industry, label, lightning, metal, nobody, notice, old, power, protection, risk, rust, rusty, safety, security, shock, sign, standard, symbol, triangle, triangular, volt, voltage, warning,