passage vs dead end

passage and dead end both are nouns.

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

As nouns, dead end is a hyponym of passage; that is, dead end is a word with a more specific, narrower meaning than passage:

Other hyponyms of passage include adit, aisle, channel, conduit, cul, cul de sac, fish ladder, passageway, right of way, shaft, throat.

passage (noun)	dead end (noun)
a journey usually by ship	a passage with access only at one end
the passing of a law by a legislative body	a situation in which no progress can be made or no advancement is possible
the act of passing something to another person
the act of passing from one state or place to the next
a bodily reaction of changing from one place or stage to another
a way through or along which someone or something may pass
a path or channel or duct through or along which something may pass
a section of text; particularly a section of medium length
a short section of a musical composition
the motion of one object relative to another