Ключевые слова: abstract, alarm, alert, atom, atomic, attention, background, caution, concept, contaminated, danger, danger sign, deterrent, disaster, energy, environment, environmental, fear, fission, forest, fusion, glowing, grunge, hazard, icon, illustration, information, irradiation, marker, nature, notice, nuclear, nuke, outdoor, physics, pictogram, plutonium, pollution, power, radiation, radioactive, radioactivity, ray, risk, sign, symbol, threat, uranium, warn, xray,