instant coffee vs java

instant coffee and java both are nouns.

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

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

instant coffee: dehydrated coffee that can be made into a drink by adding hot water
java: a beverage consisting of an infusion of ground coffee beans

Other hypernyms of instant coffee include coffee.

instant coffee (noun)	java (noun)
dehydrated coffee that can be made into a drink by adding hot water	a beverage consisting of an infusion of ground coffee beans