dealings vs relations

dealings and relations both are nouns.

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

As nouns, dealings and relations are synonyms defined as:

dealings and relations: mutual dealings or connections or communications among persons or groups

dealings (noun)	relations (noun)
the act of transacting within or between groups (as carrying on commercial activities)	mutual dealings or connections or communications among persons or groups
social or verbal interchange (usually followed by `with')
mutual dealings or connections or communications among persons or groups