zone

An area or a region distinguished from adjacent parts by a distinctive feature or characteristic.

A section of an area or territory established for a specific purpose, as a section of a city restricted to a particular type of building, enterprise, or activity.

An area of a given radius within which a uniform rate is charged, as for transportation or shipping.

Any of the five regions of the surface of the earth that are loosely divided according to prevailing climate and latitude, including the Torrid Zone, the North and South Temperate Zones, and the North and South Frigid Zones.

A similar division on any other planet.