There are several forms of money that serve different functions in the economy. The main forms discussed are metallic money (coins), paper money (banknotes), bank money (checks, drafts, bills of exchange), legal tender money, plastic money (credit/debit cards), and near money (highly liquid assets that can be converted to cash like CDs and money market accounts). Each form facilitates different types of transactions and mediums of exchange. Metallic money includes coins that can be token or standard, while paper money transitioned from representative to convertible to fiat/inconvertible notes not backed by reserves. Bank money operates through checks and inter-bank transactions. Legal tender and non-legal tender distinguish what must be