periodic motion vs periodic movement

periodic motion and periodic movement both are nouns.

Word	Noun	Adjective	Verb	Adverb
periodic motion	Yes	No	No	No
periodic movement	Yes	No	No	No

As nouns, periodic motion and periodic movement are synonyms defined as:

periodic motion and periodic movement: motion that recurs over and over and the period of time required for each recurrence remains the same

periodic motion (noun)	periodic movement (noun)
motion that recurs over and over and the period of time required for each recurrence remains the same	motion that recurs over and over and the period of time required for each recurrence remains the same