operetta vs opera comique

operetta and opera comique both are nouns.

Word	Noun	Adjective	Verb	Adverb
operetta	Yes	No	No	No
opera comique	Yes	No	No	No

As nouns, opera comique is a hypernym of operetta; that is, opera comique is a word with a broader meaning than operetta:

operetta: a short amusing opera
opera comique: opera with a happy ending and in which some of the text is spoken

Other hypernyms of operetta include bouffe, comic opera, opera bouffe.

operetta (noun)	opera comique (noun)
a short amusing opera	opera with a happy ending and in which some of the text is spoken