kinship group vs tribe

kinship group and tribe both are nouns.

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

As nouns, kinship group and tribe are synonyms defined as:

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

kinship group (noun)	tribe (noun)
group of people related by blood or marriage	a social division of (usually preliterate) people
	a federation (as of American Indians)
	group of people related by blood or marriage
	(biology) a taxonomic category between a genus and a subfamily