genealogy vs clan

genealogy and clan both are nouns.

Word	Noun	Adjective	Verb	Adverb
genealogy	Yes	No	No	No
clan	Yes	No	No	No

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

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

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