Ключевые слова: banknotes, barter, bills, budget, cash, cash flow, cents, coinage, coins, consumer behavior, crypto integration, currency, currency collection, currency market, digital finance, economic goods, economic representation, economic value, economy, exchange rates, financial assets, financial literacy, financial transactions, financial trends, global currency, investment, legal tender, materials, modern currency, monetary system, money, money management, notes, online currency, paper money, personal finance, physical currency, remittance, revenue, savings, savings strategies, speculative investing, surface texture, trade, transaction processing, transactions, value exchange, wealth, wealth distribution,