Forex is an abbreviation of foreign exchange. It relates to the huge global currency markets where investors buy and sell currencies like the euro and US dollar. A CFD is a contract for difference. It’s a form of trade on an underlying asset. The asset could be a commodity like gold, a stock like Google or Amazon, a government bond, or virtually any other asset - including currency pairs like EURUSD. Therefore, it’s possible to trade forex as a CFD.