java vs coffee

java and coffee both are nouns.

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

As nouns, java and coffee are synonyms defined as:

java and coffee: a beverage consisting of an infusion of ground coffee beans

java (noun)	coffee (noun)
a beverage consisting of an infusion of ground coffee beans	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