Fiat
Fiat currency is “legal tender” that is backed by the federal government and has its own financial system, such as fractional reserve banking. It can be in the form of physical cash or electronic representations, such as bank credit.

法定货币
法定货币是由中央政府（如美联储）支持的“法定货币”，并拥有自己的银行系统，如部分准备金银行。 它可以采用实物现金的形式，也可以以电子方式表示，例如银行信贷。