Rio Nunez coffee vs coffee tree

Rio Nunez coffee and coffee tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rio Nunez coffee	Yes	No	No	No
coffee tree	Yes	No	No	No

As nouns, coffee tree is a hypernym of Rio Nunez coffee; that is, coffee tree is a word with a broader meaning than Rio Nunez coffee:

Rio Nunez coffee: native to West Africa but grown in Java and elsewhere; resistant to coffee rust
coffee tree: any of several small trees and shrubs native to the tropical Old World yielding coffee beans

Other hypernyms of Rio Nunez coffee include coffee.

Rio Nunez coffee (noun)	coffee tree (noun)
native to West Africa but grown in Java and elsewhere; resistant to coffee rust	any of several small trees and shrubs native to the tropical Old World yielding coffee beans