folks vs kin group

folks and kin group both are nouns.

Word	Noun	Adjective	Verb	Adverb
folks	Yes	No	No	No
kin group	Yes	No	No	No

As nouns, kin group is a hypernym of folks; that is, kin group is a word with a broader meaning than folks:

Other hypernyms of folks include clan, kin, kindred, kinship group, tribe.

folks (noun)	kin group (noun)
your parents	group of people related by blood or marriage
people in general (often used in the plural)