comic opera vs opera

comic opera and opera both are nouns.

Word	Noun	Adjective	Verb	Adverb
comic opera	Yes	No	No	No
opera	Yes	No	No	No

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

comic opera: opera with a happy ending and in which some of the text is spoken
opera: a drama set to music; consists of singing with orchestral accompaniment and an orchestral overture and interludes

comic opera (noun)	opera (noun)
opera with a happy ending and in which some of the text is spoken	a building where musical dramas are performed
	a drama set to music; consists of singing with orchestral accompaniment and an orchestral overture and interludes