Get going and Set in motion

Get going verb - Begin or set in motion.

Set in motion and get going are semantically related in start topic. In some cases you can use "Set in motion" instead a verb phrase "Get going", when it comes to topics like begin, carry out.

Set in motion verb - Get going; give impetus to.

Get going and set in motion are semantically related in start topic. Sometimes you can use "Get going" instead a verb phrase "Set in motion", if it concerns topics such as begin, carry out.