Ключевые слова: abstract, background, bank, banking, battery, black, bolt, business, charge, collection, concept, currency, danger, design, dollar, electric, electrical, electricity, element, energy, equipment, flat, graphic, hazard, icon, illustration, industry, isolated, light, lightning, line, modern, money, object, pictogram, power, risk, safety, set, shape, shock, sign, silhouette, simple, symbol, technology, voltage, warning, white,