cocoa vs drinking chocolate

cocoa and drinking chocolate both are nouns.

Word	Noun	Adjective	Verb	Adverb
cocoa	Yes	No	No	No
drinking chocolate	Yes	No	No	No

As nouns, cocoa and drinking chocolate are synonyms defined as:

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

Other synonyms of cocoa include chocolate, hot chocolate.

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