kin group vs clan

kin group and clan both are nouns.

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

As nouns, kin group and clan are synonyms defined as:

Other synonyms of kin group include kin, kindred, kinship group, tribe.

kin group (noun)	clan (noun)
group of people related by blood or marriage	group of people related by blood or marriage