narthex vs church

narthex and church both are nouns.

Word	Noun	Adjective	Verb	Adverb
narthex	Yes	No	No	No
church	Yes	No	Yes	No

narthex (noun)	church (noun)
a vestibule leading to the nave of a church	a service conducted in a house of worship
portico at the west end of an early Christian basilica or church	a place for public (especially Christian) worship
	one of the groups of Christians who have their own beliefs and forms of worship
	the body of people who attend or belong to a particular local church

narthex (verb)	church (verb)
	perform a special church rite or service for