motion picture vs picture show

motion picture and picture show both are nouns.

Word	Noun	Adjective	Verb	Adverb
motion picture	Yes	No	No	No
picture show	Yes	No	No	No

As nouns, motion picture and picture show are synonyms defined as:

motion picture and picture show: a form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement

Other synonyms of motion picture include film, flick, motion-picture show, movie, moving-picture show, moving picture, pic, picture.

motion picture (noun)	picture show (noun)
a form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement	a form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement