Irish coffee vs coffee

Irish coffee and coffee both are nouns.

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

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

Other hypernyms of Irish coffee include java.

Irish coffee (noun)	coffee (noun)
sweetened coffee with Irish whiskey and whipped cream	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