Understanding the difference between a natural person and a corporation is important in studying law.

His behavior was unnatural.

His behavior was abnormal.

Natural selection plays an important role in the evolution of organisms.

I was moved by the beauty of nature.

Natural language processing is the technology that allows computers to understand and generate human language.

Natural selection plays an important role in the evolution of organisms.

Nitrous oxide is one cause of air pollution.

We are aiming to kill two birds with one stone with this plan.

We enjoy picnicking in this park year-round.