Pimenta acris vs bay-rum tree

Pimenta acris and bay-rum tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pimenta acris	Yes	No	No	No
bay-rum tree	Yes	No	No	No

As nouns, Pimenta acris and bay-rum tree are synonyms defined as:

Other synonyms of Pimenta acris include bayberry, Jamaica bayberry, wild cinnamon.

Pimenta acris (noun)	bay-rum tree (noun)
West Indian tree; source of bay rum	West Indian tree; source of bay rum