Bob and Jerk

Bob verb - To make short up-and-down movements.

Jerk is a synonym for bob in sway topic. In some cases you can use "Jerk" instead the word "Bob" as a verb or a noun, when it comes to topics like bounce, quiver, bounce up and down.

Jerk verb - To move or cause to move with a sharp quick motion.

Bob is a synonym for jerk in sway topic. You can use "Bob" instead the word "Jerk" as a verb or a noun.