Pick up and Taking captive

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

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

Pick up and taking captive are semantically related in catching topic. Sometimes you can use "Pick up" instead the phrase "Taking captive" as a verb or a noun, if it concerns topics such as abduct, catch and forcefully hold.