subspecies vs taxon

subspecies and taxon both are nouns.

Word	Noun	Adjective	Verb	Adverb
subspecies	Yes	No	No	No
taxon	Yes	No	No	No

As nouns, taxon is a hypernym of subspecies; that is, taxon is a word with a broader meaning than subspecies:

subspecies: (biology) a taxonomic group that is a division of a species; usually arises as a consequence of geographical isolation within a species
taxon: animal or plant group having natural relations

Other hypernyms of subspecies include taxonomic category, taxonomic group.

subspecies (noun)	taxon (noun)
(biology) a taxonomic group that is a division of a species; usually arises as a consequence of geographical isolation within a species	animal or plant group having natural relations