Ключевые слова: background, bank, banknote, bill, business, buy, cash, coin, communication, concept, credit, currency, dictionary, economic, economy, education, exchange, finance, financial, investment, knowledge, language, learn, letter, library, literature, market, money, note, page, pay, payment, pile, profit, school, science, stack, stock, study, success, symbol, text, title, university, value, vocabulary, wealth, word,