Here's the definition of a currency since you can't seem to come to grips with it. And btw, Ben Bernanke says gold is an asset, not a currency, and he's smarter than you by a magnitude of about 57,000.
------------
DEFINITION of 'Currency'
Currency is a generally accepted form of
money, including coins and paper notes, which is issued by a government and circulated within an economy. Used as a
medium of exchange for goods and services, currency is the basis for trade.