chess move vs checkmate

chess move and checkmate both are nouns.

Word	Noun	Adjective	Verb	Adverb
chess move	Yes	No	No	No
checkmate	Yes	No	Yes	No

As nouns, checkmate is a hyponym of chess move; that is, checkmate is a word with a more specific, narrower meaning than chess move:

chess move: the act of moving a chess piece
checkmate: a chess move constituting an inescapable and indefensible attack on the opponent's king

Other hyponyms of chess move include castle, castling, capture, check, mate, gambit.

chess move (noun)	checkmate (noun)
the act of moving a chess piece	a chess move constituting an inescapable and indefensible attack on the opponent's king
	complete victory

chess move (verb)	checkmate (verb)
	place an opponent's king under an attack from which it cannot escape and thus ending the game