auction vs commerce

auction and commerce both are nouns.

Word	Noun	Adjective	Verb	Adverb
auction	Yes	No	Yes	No
commerce	Yes	No	No	No

auction (noun)	commerce (noun)
the public sale of something to the highest bidder	transactions (sales and purchases) having the objective of supplying commodities (goods and services)
a variety of bridge in which tricks made in excess of the contract are scored toward game; now generally superseded by contract bridge	social exchange, especially of opinions, attitudes, etc.

auction (verb)	commerce (verb)
sell at an auction