monotype vs taxonomic category

monotype and taxonomic category both are nouns.

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

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

monotype: (biology) a taxonomic group with a single member (a single species or genus)
taxonomic category: animal or plant group having natural relations

Other hypernyms of monotype include taxon, taxonomic group.

monotype (noun)	taxonomic category (noun)
a typesetting machine operated from a keyboard that sets separate characters	animal or plant group having natural relations
the sole print made by pressing paper against a painted or inked glass or metal plate
(biology) a taxonomic group with a single member (a single species or genus)