Zanthoxylum fraxineum vs Zanthoxylum americanum

Zanthoxylum fraxineum and Zanthoxylum americanum both are nouns.

Word	Noun	Adjective	Verb	Adverb
Zanthoxylum fraxineum	Yes	No	No	No
Zanthoxylum americanum	Yes	No	No	No

As nouns, Zanthoxylum fraxineum and Zanthoxylum americanum are synonyms defined as:

Zanthoxylum fraxineum and Zanthoxylum americanum: small deciduous aromatic shrub (or tree) having spiny branches and yellowish flowers; eastern North America

Other synonyms of Zanthoxylum fraxineum include sea ash, toothache tree.

Zanthoxylum fraxineum (noun)	Zanthoxylum americanum (noun)
small deciduous aromatic shrub (or tree) having spiny branches and yellowish flowers; eastern North America	small deciduous aromatic shrub (or tree) having spiny branches and yellowish flowers; eastern North America