The foreign exchange market (also called forex or FX) is a place where you can buy and sell different types of currencies. Just like when you buy something at a store and have to pay with your home country's currency (like dollars or euros), you can buy currencies from other countries too. For example, you can buy a currency from Europe like euros or exchange them for a currency from Japan like yen. Different countries have different currencies and the foreign exchange market is where you can trade these currencies and make a profit.