commerce vs auction

commerce and auction both are nouns.

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

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	a variety of bridge in which tricks made in excess of the contract are scored toward game; now generally superseded by contract bridge

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