Trade or in other words known as business refers to the exchange of goods and services from one person to another in return of money. Trade is often dine in a system that is known as market. Although today money is used as a standard for exchange of goods, earlier barter system was prevailing in which used the method of exchanging good and services for goods and services. Trades can be made in a smaller quantity like the purchasing of household groceries or in huge quantities like the purchase of raw materials for any company or corporation.