supernatural being vs belief

supernatural being and belief both are nouns.

Word	Noun	Adjective	Verb	Adverb
supernatural being	Yes	No	No	No
belief	Yes	No	No	No

As nouns, belief is a hypernym of supernatural being; that is, belief is a word with a broader meaning than supernatural being:

supernatural being: an incorporeal being believed to have powers to affect the course of human events
belief: any cognitive content held as true

supernatural being (noun)	belief (noun)
an incorporeal being believed to have powers to affect the course of human events	any cognitive content held as true
	a vague idea in which some confidence is placed