Region

One of the grand districts or quarters into which any space or surface, as of the earth or the heavens, is conceived of as divided; hence, in general, a portion of space or territory of indefinite extent; country; province; district; tract.

Tract, part, or space, lying about and including anything; neighborhood; vicinity; sphere.

The upper air; the sky; the heavens.

The inhabitants of a district.

Place; rank; station.

a knowledge domain that you are interested in or are communicating about; "it was a limited realm of discourse"; "here we enter the region of opinion"; "the realm of the occult"

the extended spatial location of something; "the farming regions of France"; "religions in all parts of the world"; "regions of outer space"