passageway vs areaway

passageway and areaway both are nouns.

Word	Noun	Adjective	Verb	Adverb
passageway	Yes	No	No	No
areaway	Yes	No	No	No

As nouns, areaway is a hyponym of passageway; that is, areaway is a word with a more specific, narrower meaning than passageway:

Other hyponyms of passageway include aisle, gangway, arcade, corridor, drift, gallery, heading, gangway, gate, shaft, tunnel, walk-through.

passageway (noun)	areaway (noun)
a passage between rooms or between buildings	a passageway between buildings or giving access to a basement
a path or channel or duct through or along which something may pass