You are buying and selling money. In the Forex market, you need to think of money as a commodity; buying a currency means a trader is expecting the value to increase and on a high alert to sell a currency if the value would decrease. Like any other commodity, the price of currencies is displayed in quotes in the retail market and traded in currency pairs, like the Euro and US Dollar (Euro/USD) or the US Dollar and the Japanese Yen (USD/JPY).
