Commerce is a general term which refers to buying, selling and distribution of goods. Trade is a term which refers only to buying and selling. Trade can be import or export trade. Import trade when a country buys goods from abroad and expert trade is when a country sells its goods abroad. Services to trade are something of indispensable for the commerce such as advertisement, promotion, raw materials, warehousing, transport, assurance, banking and factory. Wholesalers and retailers are very important. The first is the person who buys big quantities of goods and sells them to the retailers. The second is the person who has a shop and sells to consumers. There are independent retailers specialize in one product and supermarket, department store that sell a variety of products.