Ключевые слова: alarm, alert, ambulance, attention, background, beacon, beware, bulb, caution, concrete, danger, dangerous, dark, disaster, emergency, equipment, factory, fire, flash, flasher, flashlight, glow, glowing, grunge, industrial, industry, lamp, light, night, nuclear, orange, plant, police, protection, red, revolving, rotate, rotating, safe, safety, security, sign, signal, siren, symbol, traffic, urgency, wall, warning, yellow,