orifice vs passageway

orifice and passageway both are nouns.

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

As nouns, passageway is a hypernym of orifice; that is, passageway is a word with a broader meaning than orifice:

orifice: an aperture or hole that opens into a bodily cavity
passageway: a path or channel or duct through or along which something may pass

Other hypernyms of orifice include passage.

orifice (noun)	passageway (noun)
an aperture or hole that opens into a bodily cavity	a passage between rooms or between buildings
	a path or channel or duct through or along which something may pass