cocoa bean vs cocoa

cocoa bean and cocoa both are nouns.

Word	Noun	Adjective	Verb	Adverb
cocoa bean	Yes	No	No	No
cocoa	Yes	No	No	No

cocoa bean (noun)	cocoa (noun)
seed of the cacao tree; ground roasted beans are source of chocolate	powder of ground roasted cacao beans with most of the fat removed
	a beverage made from cocoa powder and milk and sugar; usually drunk hot