transaction vs dealings

transaction and dealings both are nouns.

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

As nouns, transaction and dealings are synonyms defined as:

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

Other synonyms of transaction include dealing.

transaction (noun)	dealings (noun)
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)
	social or verbal interchange (usually followed by `with')
	mutual dealings or connections or communications among persons or groups