Currency Currency A currency (from , "in circulation", from ), in the most specific use of the word, refers to money in any form when in actual use or circulation as a medium of exchange, especially circulating banknotes and coins. A more general definition is that a currency is a "system of money" (monetary units) in common use, especially in a nation. Under this definition, US dollars, British pounds, Australian dollars, European euros and Russian ruble are examples of currency. These various currencies are recognized as stores of value and are traded between nations in foreign exchange markets, which determine the
World currency or "supercurrency", as the proposed terra or the DEY (acronym for Dollar Euro Yen), produced and supported by a central bank which is used for "all" transactions around the world, regardless of the nationality of the entities (individuals, corporations, governments, or other organizations) involved in the transaction. No such official currency currently exists. Advocates, notably Keynes, of a global currency often argue that such a currency would not suffer from inflation, which, in extreme cases, has had disastrous effects for economies. In addition, many argue that a single global currency would make conducting international business more efficient and would encourage