religion vs religious

religion and religious both are nouns.

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

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

religion (adjective)	religious (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