dead end vs deadlock

dead end and deadlock both are nouns.

Word	Noun	Adjective	Verb	Adverb
dead end	Yes	No	No	No
deadlock	Yes	No	No	No

As nouns, dead end and deadlock are synonyms defined as:

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

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

dead end (noun)	deadlock (noun)
a passage with access only at one end	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