Noun
A royal jurisdiction or domain; a region which is under the dominion of a king; a kingdom.
Hence, in general, province; region; country; domain; department; division; as, the realm of fancy.
Source: Webster's dictionaryThe gallery in which the reporters sit has become a fourth estate of the realm. Thomas Babington Macaulay
On the other hand, the artist has much to do in the realm of color construction, which is so little explored and so obscure, and hardly dates back any farther than to the beginning of Impressionism. Robert Delaunay
We are imprisoned in the realm of life, like a sailor on his tiny boat, on an infinite ocean. Anna Freud
There is a concept which corrupts and upsets all others. I refer not to Evil, whose limited realm is that of ethics; I refer to the infinite. Jorge Luis Borges
If there is one realm in which it is essential to be sublime, it is in wickedness. You spit on a petty thief, but you can't deny a kind of respect for the great criminal. Denis Diderot
In the realm of the blind, the one-eyed man is king. Swedish Proverb