picture palace vs theater

picture palace and theater both are nouns.

Word	Noun	Adjective	Verb	Adverb
picture palace	Yes	No	No	No
theater	Yes	No	No	No

As nouns, theater is a hypernym of picture palace; that is, theater is a word with a broader meaning than picture palace:

picture palace: a theater where films are shown
theater: a building where theatrical performances or motion-picture shows can be presented

Other hypernyms of picture palace include house, theatre.

picture palace (noun)	theater (noun)
a theater where films are shown	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