territory
Definitions
An area of land under the jurisdiction of a ruler or state.
A geographic region or tract of land, especially one considered as belonging to or associated with a particular person or animal.
A field of knowledge, interest, or activity.
Examples
The wolf pack fiercely defended its territory against intruders.
The company is looking to expand its sales territory into the neighboring states.
Exploring the uncharted territory of the deep ocean remains a major scientific challenge.