dinner theatre vs theatre

dinner theatre and theatre both are nouns.

Word	Noun	Adjective	Verb	Adverb
dinner theatre	Yes	No	No	No
theatre	Yes	No	No	No

As nouns, theatre is a hypernym of dinner theatre; that is, theatre is a word with a broader meaning than dinner theatre:

dinner theatre: a theater at which dinner is included in the price of admission
theatre: a building where theatrical performances or motion-picture shows can be presented

Other hypernyms of dinner theatre include house, theater.

dinner theatre (noun)	theatre (noun)
a theater at which dinner is included in the price of admission	a building where theatrical performances or motion-picture shows can be presented
	the art of writing and producing plays
	a region in which active military operations are in progress