realm(noun) a knowledge domain that you are interested in or are communicating about; "it was a limited domain of discourse"; "here we enter the region of opinion"; "the realm of the occult"
(noun) the domain ruled by a king or queen
(noun) a domain in which something is dominant; "the untroubled kingdom of reason"; "a land of make-believe"; "the rise of the realm of cotton in the south"
Source:
WordNet 2.0 Copyright 2003 by Princeton University. All rights reserved.
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