superfamily vs taxonomic group

superfamily and taxonomic group both are nouns.

Word	Noun	Adjective	Verb	Adverb
superfamily	Yes	No	No	No
taxonomic group	Yes	No	No	No

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

superfamily: (biology) a taxonomic group ranking below an order but above a family
taxonomic group: animal or plant group having natural relations

Other hypernyms of superfamily include taxon, taxonomic category.

superfamily (noun)	taxonomic group (noun)
(biology) a taxonomic group ranking below an order but above a family	animal or plant group having natural relations