His meritorious service is very significant to us.

His drive for success keeps him moving forward.

He was emotionally disturbed when he heard the news.

This earthquake caused a large motional disturbance.

He is learning how to use gerunds.

His behavior is flexible like an adjectival noun.

This machine is driven by electricity.

He was born as an illegitimate child and experienced many difficulties.

My grandfather used to till his privately-owned rice field.

Using the private railway makes commuting very convenient.