Fall down and Flub

Fall down verb - Lose an upright position suddenly.

Flub and fall down are semantically related. in blunder topic. In some cases you can use "Flub" instead a verb "Fall down", when it comes to topics like botch.

Flub verb - To make or do (something) in a clumsy or unskillful way.

Fall down and flub are semantically related. Sometimes you can use "Fall down" instead a verb "Flub".