Double check and Pick up

Double check noun - Something that checks the correctness of a previous check.

Pick up and double check are semantically related. in make sure topic. In some cases you can use "Pick up" instead a verb phrase "Double check".

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

Double check and pick up are semantically related. Sometimes you can replace phrase "Double check" with "Pick up", this terms are similar.