Noun commerce has 3 senses
  1. commerce, commercialism, mercantilism - transactions (sales and purchases) having the objective of supplying commodities (goods and services)
    --1 is a kind of transaction, dealing, dealings
    --1 has parts: transportation, shipping, transport
    --1 has particulars:
     trading; trade; exchange, interchange; initial public offering, IPO, initial offering; commercial enterprise, business enterprise, business; carriage trade; importing, importation; exporting, exportation; marketing; distribution; selling, merchandising, marketing; traffic; payment, defrayal, defrayment; evasion, nonpayment
  2. Department of Commerce, Commerce Department, Commerce, DoC - 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
    --2 is a kind of executive department
    --2 has parts:
     Bureau of the Census, Census Bureau; National Oceanic and Atmospheric Administration, NOAA; Technology Administration; Patent and Trademark Office Database, Patent Office
  3. commerce - social exchange, especially of opinions, attitudes, etc.
    --3 is a kind of