balsam of tolu vs tolu tree

balsam of tolu and tolu tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
balsam of tolu	Yes	No	No	No
tolu tree	Yes	No	No	No

balsam of tolu (noun)	tolu tree (noun)
aromatic yellowish brown balsam from the tolu balsam tree used especially in cough syrups	medium-sized tropical American tree yielding tolu balsam and a fragrant hard wood used for high-grade furniture and cabinetwork