relations vs social relation

relations and social relation both are nouns.

Word	Noun	Adjective	Verb	Adverb
relations	Yes	No	No	No
social relation	Yes	No	No	No

As nouns, social relation is a hypernym of relations; that is, social relation is a word with a broader meaning than relations:

relations: mutual dealings or connections or communications among persons or groups
social relation: a relation between living organisms (especially between people)

relations (noun)	social relation (noun)
mutual dealings or connections or communications among persons or groups	a relation between living organisms (especially between people)