multiplex vs movie theatre

multiplex and movie theatre both are nouns.

Word	Noun	Adjective	Verb	Adverb
multiplex	Yes	Yes	No	No
movie theatre	Yes	No	No	No

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

multiplex: a movie theater that has several different auditoriums in the same building
movie theatre: a theater where films are shown

Other hypernyms of multiplex include cinema, movie house, movie theater, picture palace.

multiplex (noun)	movie theatre (noun)
a movie theater that has several different auditoriums in the same building	a theater where films are shown
communicates two or more signals over a common channel

multiplex (adjective)	movie theatre (adjective)
having many parts or aspects
many and varied; having many features or forms