checkmate vs chess

checkmate and chess both are nouns.

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

checkmate (noun)	chess (noun)
a chess move constituting an inescapable and indefensible attack on the opponent's king	a board game for two players who move their 16 pieces according to specific rules; the object is to checkmate the opponent's king
complete victory	weedy annual native to Europe but widely distributed as a weed especially in wheat

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