free-thinking vs religious belief

free-thinking is not a noun while religious belief is a noun.

Word	Noun	Adjective	Verb	Adverb
free-thinking	No	Yes	No	No
religious belief	Yes	No	No	No

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

free-thinking (adjective)	religious belief (adjective)
unwilling to accept authority or dogma (especially in religion)