Money

Economics offers various definitions for money, though it is now commonly defined by the functions attached to any good or token that functions in trade as a medium of exchange, store of value, and unit of account. Some authors explicitly require money to be a standard of deferred payment, too [1]. In common usage, money refers more specifically to currency, particularly the many circulating currencies with legal tender status conferred by a national state; deposit accounts denominated in such currencies are also considered part of the money supply, although these characteristics are historically comparatively recent.