genealogy vs kinship group

genealogy and kinship group both are nouns.

Word	Noun	Adjective	Verb	Adverb
genealogy	Yes	No	No	No
kinship group	Yes	No	No	No

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

Other hypernyms of genealogy include clan, kin, kin group, kindred, tribe.

genealogy (noun)	kinship group (noun)
the study or investigation of ancestry and family history	group of people related by blood or marriage
successive generations of kin