Ключевые слова: abstract, abundance, background, bank, banking, banknote, bill, business, buy, cash, commercial, concept, cost, currency, economic, economy, euro, europe, european, exchange, finance, financial, green, heap, income, investment, loan, market, monetary, money, note, one, paper, pay, payment, price, profit, rate, rich, sale, save, savings, stock, success, value, wealth, white,