coffee vs coffee berry

coffee and coffee berry both are nouns.

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

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

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

Other synonyms of coffee include coffee bean.

coffee (noun)	coffee berry (noun)
a medium brown to dark-brown color	a seed of the coffee tree; ground to make coffee
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