Ключевые слова: ahead, alert, apocalypse, attention, background, beware, careful, catastrophe, caution, clouds, cloudy, danger, dangerous, dramatic, energy, environmental, fallout, fusion, hazard, icon, industrial, industry, irradiation, material, metal, nuclear, physics, pictogram, plutonium, pollution, power, radiation, radio, radioactive, radioactivity, ray, render, research, roadsign, roentgen, rust, safety, sign, signage, signpost, sky, symbol, triangle, warning, yellow,