impure vs religious belief

impure is not a noun while religious belief is a noun.

Word	Noun	Adjective	Verb	Adverb
impure	No	Yes	No	No
religious belief	Yes	No	No	No

impure (noun)	religious belief (noun)
	a strong belief in a supernatural power or powers that control human destiny

impure (adjective)	religious belief (adjective)
(used of persons or behaviors) immoral or obscene
combined with extraneous elements
having a physical or moral blemish so as to make impure according to dietary or ceremonial laws