picture show vs motion picture

picture show and motion picture both are nouns.

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

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

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

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

picture show (noun)	motion picture (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