Ключевые слова: background, bright, bulb, business, capital, cash, clip, color, concept, conceptual, cost, currency, dark, design, dollar, electric, electricity, energy, environment, equipment, finance, financial, glass, glow, gray, grey, idea, illuminated, illumination, innovation, inside, inspiration, intelligence, invention, investment, lamp, light, lightbulb, many, money, object, power, reflection, save, savings, science, sign, solution, symbol, technology,