also: ナビゲータ
Refers to a person who navigates, such as a ship's navigator or a rally co-driver. Also used for navigation devices or software.
He served as the navigator in the rally.
The navigator function of the car navigation system is convenient.
Used for a person who guides a TV or radio program, introduces guests, and keeps the show moving. Often translated as 'host' or 'MC'.
She works as the host of a popular TV program.
As the MC of the event, he livened up the venue.
She serves as the host of this travel program.
In rallying, there's a person who acts as navigator from the passenger seat.