Erythroxylon vs genus Erythroxylum

Erythroxylon and genus Erythroxylum both are nouns.

Word	Noun	Adjective	Verb	Adverb
Erythroxylon	Yes	No	No	No
genus Erythroxylum	Yes	No	No	No

As nouns, Erythroxylon and genus Erythroxylum are synonyms defined as:

Erythroxylon and genus Erythroxylum: a large genus of South American shrubs and small trees of the family Erythroxylaceae

Other synonyms of Erythroxylon include Erythroxylum, genus Erythroxylon.

Erythroxylon (noun)	genus Erythroxylum (noun)
a large genus of South American shrubs and small trees of the family Erythroxylaceae	a large genus of South American shrubs and small trees of the family Erythroxylaceae