Ключевые слова: accounting, alternative, background, bank, banking, budget, bulb, business, coins, concept, conservation, consumption, cost, deposit, economy, efficiency, electric, electricity, energy, expenses, finance, fund, future, glass, growth, household, idea, incandescent, income, increasing, innovation, inside, investment, isolated, keep, lamp, light, lightbulb, loan, money, object, pay, piggy, power, save, solution, success, symbol, technology, white,