Plane

From NWNWiki

A plane, otherwise known as a plane of existence, is one of many dimensions that may be accessed by spells, spell-like abilities, magic items, or specific creatures. These planes include (but are not limited to) the Astral Plane, the Ethereal Plane, the inner planes, the outer planes, the Plane of Shadows, and various other realities. The "normal" world is part of the material plane.