sacred vs religious

sacred is not a noun while religious is a noun.

Word	Noun	Adjective	Verb	Adverb
sacred	No	Yes	No	No
religious	Yes	Yes	No	No

sacred (noun)	religious (noun)
	a member of a religious order who is bound by vows of poverty and chastity and obedience

sacred (adjective)	religious (adjective)
concerned with religion or religious purposes	having or showing belief in and reverence for a deity
(often followed by `to') devoted exclusively to a single use or purpose or person	of or relating to clergy bound by monastic vows
made or declared or believed to be holy; devoted to a deity or some religious ceremony or use	concerned with sacred matters or religion or the church
worthy of respect or dedication	extremely scrupulous and conscientious
worthy of religious veneration