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alternative investment, apple inc., application software, bank, banknote, bitcoin, blockchain, bond (finance), brand, capitalism, credit, credit card, cryptocurrency, debit card, debits and credits, debt, diversification (finance), equity (finance), facebook, fiat money, finance, fixed income, gift card, google hangouts, india, inflation, interest, interest rate, internet, kerala, leverage (finance), loyalty program, mobile app, mobile phone, money, network effect, private equity, reserve currency, risk, stablecoin, starbucks, touchpoint, twitter, united states dollar, whatsapp, wheat and chessboard problem