dealing vs transaction

dealing and transaction both are nouns.

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

As nouns, dealing and transaction are synonyms defined as:

dealing and transaction: the act of transacting within or between groups (as carrying on commercial activities)

Other synonyms of dealing include dealings.

dealing (noun)	transaction (noun)
method or manner of conduct in relation to others	the act of transacting within or between groups (as carrying on commercial activities)
the act of transacting within or between groups (as carrying on commercial activities)