Ключевые слова: background, bank, banking, billfold, black, business, buy, cash, change, coin, commerce, concept, conceptual, credit, currency, cyberspace, digital, ebusiness, economy, electronic, exchange, finance, financial, gold, group, growth, income, investment, isolated, leader, leather, market, metal, mining, money, object, open, pay, payment, purse, savings, symbol, virtual, wallet, wealth,