Pen up and Pawl

Pen up verb - Confine in a fold, like sheep.

Pawl and pen up are semantically related. In some cases you can use "Pawl" instead a verb "Pen up".

Pawl noun - A hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward.

Pen up and pawl are semantically related. Sometimes you can replace term "Pen up" with "Pawl", this nouns are similar.