taxon vs taxonomic group

taxon and taxonomic group both are nouns.

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

As nouns, taxon and taxonomic group are synonyms defined as:

taxon and taxonomic group: animal or plant group having natural relations

Other synonyms of taxon include taxonomic category.

taxon (noun)	taxonomic group (noun)
animal or plant group having natural relations	animal or plant group having natural relations