var. vs taxonomic group

var. and taxonomic group both are nouns.

Word	Noun	Adjective	Verb	Adverb
var.	Yes	No	No	No
taxonomic group	Yes	No	No	No

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

var.: (biology) a group of organisms within a species that differ in trivial ways from similar groups
taxonomic group: animal or plant group having natural relations

Other hypernyms of var. include taxon, taxonomic category.

var. (noun)	taxonomic group (noun)
(biology) a group of organisms within a species that differ in trivial ways from similar groups	animal or plant group having natural relations