Zanthoxylum americanum vs toothache tree

Zanthoxylum americanum and toothache tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Zanthoxylum americanum	Yes	No	No	No
toothache tree	Yes	No	No	No

As nouns, Zanthoxylum americanum and toothache tree are synonyms defined as:

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

Other synonyms of Zanthoxylum americanum include sea ash, Zanthoxylum fraxineum.

Zanthoxylum americanum (noun)	toothache tree (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