religious vs religion

religious and religion both are nouns.

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

religious (noun)	religion (noun)
a member of a religious order who is bound by vows of poverty and chastity and obedience	a strong belief in a supernatural power or powers that control human destiny
	an institution to express belief in a divine power

religious (adjective)	religion (adjective)
having or showing belief in and reverence for a deity
of or relating to clergy bound by monastic vows
concerned with sacred matters or religion or the church
extremely scrupulous and conscientious