motion

Process of moving; an object that is moving is said to be ‘in motion’. The speed at which an object is moving is often measured in metres per second (m/s) or kilometres per hour (kph). The motion of objects can be described using Newton's laws of motion.

motion

In music, the succession of notes of different pitch. The word is used only with an adjectival qualification: conjunct motion, a single part moving by steps of adjoining notes; contrary motion, two or more parts moving together in different directions; disjunct motion, a single part moving by larger than stepwise intervals; oblique motion, one part moving when another stands still; and similar motion, two or more parts moving together in the same direction.