Motion picture and Slow motion

Motion picture noun - A story told by means of a series of continuously projected pictures and a sound track.

Slow motion and motion picture are semantically related. In some cases you can replace phrase "Slow motion" with "Motion picture", this phrases are similar.

Slow motion noun - A movie that apparently takes place at a slower than normal speed; achieved by taking the film at a faster rate.

Motion picture and slow motion are semantically related. Sometimes you can use "Motion picture" instead a noun phrase "Slow motion".