unclean vs religious belief

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

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

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

unclean (adjective)	religious belief (adjective)
having a physical or moral blemish so as to make impure according to dietary or ceremonial laws
soiled or likely to soil with dirt or grime