sea ash vs Zanthoxylum americanum

sea ash and Zanthoxylum americanum both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea ash	Yes	No	No	No
Zanthoxylum americanum	Yes	No	No	No

As nouns, sea ash and Zanthoxylum americanum are synonyms defined as:

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

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

sea ash (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