deadlock vs dead end

deadlock and dead end both are nouns.

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

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

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

Other synonyms of deadlock include impasse, stalemate, standstill.

deadlock (noun)	dead end (noun)
a situation in which no progress can be made or no advancement is possible	a passage with access only at one end
	a situation in which no progress can be made or no advancement is possible