coffee bean vs coffee

coffee bean and coffee both are nouns.

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

As nouns, coffee bean and coffee are synonyms defined as:

coffee bean and coffee: a seed of the coffee tree; ground to make coffee

Other synonyms of coffee bean include coffee berry.

coffee bean (noun)	coffee (noun)
a seed of the coffee tree; ground to make coffee	a medium brown to dark-brown color
	a beverage consisting of an infusion of ground coffee beans
	a seed of the coffee tree; ground to make coffee
	any of several small trees and shrubs native to the tropical Old World yielding coffee beans