Ключевые слова: abstract, american, background, band, business, cash, coin, color, concept, curled, currency, cutout, dollar, economy, elastic, elasticity, equipment, exchange, fasten, finance, financial, flexible, idea, investment, knot, material, messy, monetary, money, nobody, object, office, recession, red, rubber, salary, saving, school, silicon, simplicity, single, supply, symbol, twist, twisted, usa, value, wrist, wristband,