Every citizen has the right to vote.

A citizen arrest is the act of apprehending a person by a private individual rather than a law enforcement officer.

A citizen's arrest is the apprehension of a person by a private citizen, rather than by a law enforcement officer or agent of the state, who has witnessed a crime or has reasonable suspicion that a person has committed a crime.

I use a citizens band radio to communicate with other drivers on the road.

The senior citizen enjoys taking walks in the park.

She obtained citizenship after living in the country for five years.

The citizenry of this city is very diverse.