Polaris is known as the North Star.

He is an expert in civil law.

He is studying about ancient military tactics.

In a game of chess, pawns are the most numerous.

The ball hit the wall and made a 'pong' sound.

This sofa is made of polyurethane.

The police arrived at the scene of the incident.

The polis of ancient Greece was an independent city-state.

He acted as the spearhead of our team.

I have to finish that report tonight.