cocoa vs beverage

cocoa and beverage both are nouns.

Word	Noun	Adjective	Verb	Adverb
cocoa	Yes	No	No	No
beverage	Yes	No	No	No

As nouns, beverage is a hypernym of cocoa; that is, beverage is a word with a broader meaning than cocoa:

cocoa: a beverage made from cocoa powder and milk and sugar; usually drunk hot
beverage: any liquid suitable for drinking

Other hypernyms of cocoa include drink, drinkable, potable.

cocoa (noun)	beverage (noun)
powder of ground roasted cacao beans with most of the fat removed	any liquid suitable for drinking
a beverage made from cocoa powder and milk and sugar; usually drunk hot