I saw a monkey in the park.

In ancient documents, there are descriptions of monkeys being treated as sacred animals.

In old stories, it is said that monkeys could speak human language.

He climbed the tree like a monkey.

This forest is a habitat for many kinds of animals.

There is an active mountaineering club at my university.

This area has turned into a lawless district.

A proper noun is a noun that refers to a specific person, place, or thing.

This eigenfunction is one of the fundamental concepts of quantum mechanics.

We adjusted our travel schedule according to Mountain Standard Time.