tribe vs taxonomic category

tribe and taxonomic category both are nouns.

Word	Noun	Adjective	Verb	Adverb
tribe	Yes	No	No	No
taxonomic category	Yes	No	No	No

As nouns, taxonomic category is a hypernym of tribe; that is, taxonomic category is a word with a broader meaning than tribe:

Other hypernyms of tribe include taxon, taxonomic group.

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