air passage vs vent

air passage and vent both are nouns.

Word	Noun	Adjective	Verb	Adverb
air passage	Yes	No	No	No
vent	Yes	No	Yes	No

air passage (noun)	vent (noun)
a duct that provides ventilation (as in mines)	activity that frees or expresses creative energy or emotion
	external opening of urinary or genital system of a lower vertebrate
	a hole for the escape of gas or air
	a slit in a garment (as in the back seam of a jacket)
	a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt

air passage (verb)	vent (verb)
	expose to cool or cold air so as to cool or freshen
	give expression or utterance to