Money is portable property that can be used, and is accepted, as a medium of exchange. Currency is a standardized monetary medium of exchange in wide economic circulation. When you use Card, you not only receive a paper or electronic statement but the transactions are maintained in your lender's records. This allows you to gain access if you want to dispute a transaction or look back at a past charge. Some banks even have spending trackers that break down card payments by category such as food and grocery, clothes, utilities, and car loans.