Ключевые слова: background, bank, bright, bulb, business, cash, coins, concept, conservation, conserve, consumption, creative, creativity, eco, ecology, economy, efficiency, electric, electrical, electricity, energy, environment, finance, financial, glass, glowing, green, growth, hand, home, idea, innovation, invention, lamp, light, lightbulb, money, object, power, resource, save, saving, savings, solution, success, symbol, technology, wall, wealth, white,