religion vs faith

religion and faith both are nouns.

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

As nouns, religion and faith are synonyms defined as:

religion and faith: a strong belief in a supernatural power or powers that control human destiny

Other synonyms of religion include religious belief.

As nouns, religion and faith are synonyms defined as:

Other synonyms of religion include organized religion.

religion (noun)	faith (noun)
a strong belief in a supernatural power or powers that control human destiny	loyalty or allegiance to a cause or a person
an institution to express belief in a divine power	a strong belief in a supernatural power or powers that control human destiny
	complete confidence in a person or plan etc
	an institution to express belief in a divine power