stalemate vs deadlock

stalemate and deadlock both are nouns.

Word	Noun	Adjective	Verb	Adverb
stalemate	Yes	No	Yes	No
deadlock	Yes	No	No	No

As nouns, stalemate and deadlock are synonyms defined as:

stalemate and deadlock: a situation in which no progress can be made or no advancement is possible

Other synonyms of stalemate include dead end, impasse, standstill.

stalemate (noun)	deadlock (noun)
drawing position in chess: any of a player's possible moves would place his king in check	a situation in which no progress can be made or no advancement is possible
a situation in which no progress can be made or no advancement is possible

stalemate (verb)	deadlock (verb)
subject to a stalemate