Ключевые слова: background, bank, banking, bill, bills, budget, bulb, business, calculator, cash, concept, cost, creative, credit, currency, debt, dollar, earning, economy, efficiency, efficient, electric, electrical, electrician, electricity, energy, exchange, finance, financial, glass, idea, income, innovation, investment, lamp, light, lightbulb, money, old, payment, purse, return, saving, technology, wallet, wealth,