In philosophy, natural law refers to the moral laws of the universe.

He prefers natural foods.

This wood may spontaneously combust if the humidity is high.

His car spontaneously combusted all of a sudden.

Natural rights are rights that humans have from birth.

I put scallions in the soup.

The committee chairman is leading the meeting.

I am planning to go to Changsha, China next week.

He defeated the enemy using a pike.

Kiyonaga is my best friend.