Pick up and Taking into custody

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

Taking into custody and pick up are semantically related In some cases you can use "Taking into custody" instead a noun "Pick up".

Taking into custody noun - The act of apprehending (especially apprehending a criminal).

Pick up and taking into custody are semantically related in put under arrest topic. You can use "Pick up" instead the phrase "Taking into custody" as a noun or a verb.