Chlorine is a very reactive nonmetal.

Non-metals are important in chemistry.

The nonaggression treaty was signed between the two countries.

I will continue to study until I fully understand the topic.

The non-negative number represents a quantity greater than or equal to zero.

Nonviolence is a fundamental principle of Gandhi's philosophy.

Nothing ventured, nothing gained.

To err is human.

You don't get something for nothing (people who do not work hard cannot expect to be successful).