Ruler (Noun)

Measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths.

Nouns denoting man-made objects.

A person who rules or commands; "swayer of the universe".

Nouns denoting people.

The monarch was the ultimate ruler of the kingdom, with absolute power to make laws and command her subjects.
The president was a just ruler, loved by his people for his fairness and wisdom.
As the supreme ruler of the empire, the emperor was feared and respected by all who knew him.
In ancient times, gods and goddesses were believed to be the rulers of the natural world, controlling the forces of nature.
The king was a cruel ruler, ruling with an iron fist and crushing any opposition to his authority.