religious vs sacred

religious is a noun but sacred is not a noun.

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

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

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