(n): the act of transacting within or between groups (as carrying on commercial activities)
(n): 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
(n): a federal department in the executive branch of the government of the United States
(n): social exchange, especially of opinions, attitudes, etc.
(n): the use of speech for informal exchange of views or ideas or information etc.
