kinfolk vs gens

kinfolk and gens both are nouns.

Word	Noun	Adjective	Verb	Adverb
kinfolk	Yes	No	No	No
gens	Yes	No	No	No

As nouns, gens is a hyponym of kinfolk; that is, gens is a word with a more specific, narrower meaning than kinfolk:

Other hyponyms of kinfolk include people, homefolk, house, dynasty, name.

kinfolk (noun)	gens (noun)
people descended from a common ancestor	family based on male descent