long castle vs castle

long castle and castle both are nouns.

Word	Noun	Adjective	Verb	Adverb
long castle	Yes	No	No	No
castle	Yes	No	Yes	No

As nouns, castle is a hypernym of long castle; that is, castle is a word with a broader meaning than long castle:

Other hypernyms of long castle include castling.

long castle (noun)	castle (noun)
castling on the queenside.	interchanging the positions of the king and a rook
	a large building formerly occupied by a ruler and fortified against attack
	(chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard
	a large and stately mansion

long castle (verb)	castle (verb)
	move the king two squares toward a rook and in the same move the rook to the square next past the king