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Commerce is the exchange of goods and services, especially on a large scale. It includes legal, economic, political, social, cultural and technological systems that operate in a country or in international trade.

In the economic sense, "commerce" refers to the conduct of trade among economic agents. Commerce generally affects the well-being and welfare of citizens and residents, as it is known to directly impact the money which people have and their job opportunities as well. The term "commerce" may also refer to the buying and selling of commodities globally or across borders - between governments and between business firms.

Many scholars and ancient philosophers have known to mix up the terms "trade" and "commerce". But in essence these two are distinct terms carrying different meanings:

Trade, on the one hand, may mean the selling and buying of commodities for money or anything of value
Commerce covers a much broader field and includes trade, along with the services which facilitate such buying and selling of goods. These services may include insurance, warehousing, transporting and advertising.

Nevertheless, one can speak of "trade in goods and services".