opera vs opera bouffe

opera and opera bouffe both are nouns.

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

As nouns, opera bouffe is a hyponym of opera; that is, opera bouffe is a word with a more specific, narrower meaning than opera:

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

Other hyponyms of opera include rock opera, bouffe, comic opera, opera comique, grand opera, musical drama.

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