Forex, or foreign exchange trading, allows traders and investors to earn money by speculating on whether currencies will increase or decrease in value against one another. Traders can trade in currency pairs, or they can exercise forex currency options, in which they are investing a smaller amount of money to predict whether the price of a certain currency will go up or down. Forex currency options are a way to decrease risk and boost profits on forex trading, especially in a volatile and unpredictable market.