High Quality Content by WIKIPEDIA articles! A recognized form of exchange can be a form of money or currency, a commodity like gold, or financial capital. To act as a store of value, these forms must be able to be saved and retrieved at a later time, and be predictably useful when retrieved. Storage of value is one of several distinct functions of money. The other functions are the standard of deferred payment, which requires acceptability to parties owed a debt, and the unit of account, which requires fungibility so accounts in any amount can be readily settled. It is also distinct from the medium of exchange function which requires durability when used in trade and to minimize fraud opportunities. With money being a storage of value was the start of monetary inflation cycles where the under and over abundance of market goods can lead to price instability.