What is his real name?

His drive for success keeps him moving forward.

He was emotionally disturbed when he heard the news.

This earthquake caused a large motional disturbance.

I perform work every day.

He continued hard labour all day long.

His behavior is flexible like an adjectival noun.

This machine is driven by electricity.

He likes to take a walk in the park at dusk.

Happiness is a mass noun, you can't count it.