Flaps and Thresh

Flaps noun - A movable airfoil that is part of an aircraft wing; used to increase lift or drag.

Thresh and flaps are semantically related. in flutter topic. In some cases you can use "Thresh" instead a verb "Flaps".

Thresh verb - To make jerky or restless movements.

Flaps and thresh are semantically related. Sometimes you can replace term "Flaps" with "Thresh", this verbs are similar.