Ключевые слова: abstract, banknotes, board, business, cash, challenge, chess, coins, combat, competition, concepts, contract, crisis, currency, dark, dollar, economy, euro, exchange, finance, financial, gamble, global, home, idea, inflation, international, investment, isolated, luck, market, metaphor, money, note, paper, par, piece, planning, play, rate, risk, rivalry, savings, sign, solution, stock, strategy, struggle, symbol, wealth,