Pick up and Re-start

Pick up verb - To acquire complete knowledge, understanding, or skill in.

Re-start and pick up are semantically related In some cases you can replace phrase "Re-start" with "Pick up", this terms are similar.

Re-start verb - Take up or begin anew.

Pick up and re-start are semantically related in continue topic. You can use "Pick up" instead a verb phrase "Re-start", if it concerns topics such as resume, begin again, begin or start again.