Ключевые слова: aged, alert, arrow, attention, background, beware, black, caution, closeup, cracked, danger, dangerous, electric, electrical, electricity, electroshock, emblem, energy, enter, flash, forbidden, hazard, high, icon, industrial, industry, lighting, lightning, metal, old, orange, power, precaution, rust, rusty, safety, shock, sign, stop, surface, symbol, texture, threat, triangle, volt, voltage, warning, wire, zone,