noun
realm
RELM/relm/
A territory under a ruler's authority.
The map shows a realm with a castle, village, and farmland.

Etymology
A kingdom is a territory under a ruler’s authority; this territorial sense extended figuratively to a sphere of activity, influence, or knowledge. The word’s deeper ancestry is uncertain.
In context
a shadow realm, a dark reflection of the divine world
More examples
- The queen travels throughout her realm to hear her subjects' concerns.
- Two neighboring realms sign a peace treaty.
- Rebels seize a fortress at the edge of the realm.
Forms
realm · realms
Similar words
- kingdom
- Specifically a territory ruled by a king or queen.
- domain
- Can include property controlled by someone other than a ruler.