commerce

(noun) transactions (sales and purchases) having the objective of supplying commodities (goods and services). Synonyms: commercialism, mercantilism.

(noun) 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. Synonyms: Department of Commerce, Commerce Department, Commerce, DoC.

(noun) social exchange, especially of opinions, attitudes, etc..