commerce

n 1: transactions (sales and purchases) having the objective of supplying commodities (goods and services) syn commercialism, mercantilism

2: the United States federal department that promotes and administers domestic and foreign trade (including management of the census and the patent office); created in 1913 syn Department of Commerce, Commerce Department, DoC

3: social exchange, especially of opinions, attitudes, etc.

Source: WordNet. Princeton University