In English, I understand the difference between those two words.
Motion is describing something moving continuously, while movement is more precise or detailed, as with a purpose and/or a direction. Sometimes, they can mean the same thing (Source).
In French, I was only able to find "mouvement" to translate "motion" and "movement". But "mouvement" in French doesn't really match the idea of "motion". My two online researches found nothing valuable to answer my question (Search 1 and Search 2).
Which is: how would we translate to French those two words, "movement" and "motion"?
NB: French being my native language, I may be misunderstanding English words.