coco plum tree vs cocoa plum

coco plum tree and cocoa plum both are nouns.

Word	Noun	Adjective	Verb	Adverb
coco plum tree	Yes	No	No	No
cocoa plum	Yes	No	No	No

As nouns, coco plum tree and cocoa plum are synonyms defined as:

coco plum tree and cocoa plum: small tropical American tree bearing edible plumlike fruit

Other synonyms of coco plum tree include Chrysobalanus icaco, coco plum, icaco.

coco plum tree (noun)	cocoa plum (noun)
small tropical American tree bearing edible plumlike fruit	plum-shaped whitish to almost black fruit used for preserves; tropical American
	small tropical American tree bearing edible plumlike fruit