Trade is a basic economic concept involving buying and selling, or exchanging of goods and services between nations or businesses, taking place in an economy between producers and consumers. In financial markets, trading refers to the buying and selling of securities. International trade permits countries to expand their markets for both goods and services that otherwise may not have been available to it. Almost every kind of product can be found on the international market: food, clothes, spare parts, oil, jewelry, wine, stocks, currencies, and water.