dealing vs commerce

dealing and commerce both are nouns.

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

As nouns, commerce is a hyponym of dealing; that is, commerce is a word with a more specific, narrower meaning than dealing:

dealing: the act of transacting within or between groups (as carrying on commercial activities)
commerce: transactions (sales and purchases) having the objective of supplying commodities (goods and services)

dealing (noun)	commerce (noun)
method or manner of conduct in relation to others	transactions (sales and purchases) having the objective of supplying commodities (goods and services)
the act of transacting within or between groups (as carrying on commercial activities)	social exchange, especially of opinions, attitudes, etc.