hot chocolate vs beverage

hot chocolate and beverage both are nouns.

Word	Noun	Adjective	Verb	Adverb
hot chocolate	Yes	No	No	No
beverage	Yes	No	No	No

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

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

Other hypernyms of hot chocolate include drink, drinkable, potable.

hot chocolate (noun)	beverage (noun)
a beverage made from cocoa powder and milk and sugar; usually drunk hot	any liquid suitable for drinking