fairy vs supernatural being

fairy and supernatural being both are nouns.

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

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

fairy: a small being, human in form, playful and having magical powers
supernatural being: an incorporeal being believed to have powers to affect the course of human events

Other hypernyms of fairy include spiritual being.

fairy (noun)	supernatural being (noun)
a small being, human in form, playful and having magical powers	an incorporeal being believed to have powers to affect the course of human events
offensive term for a homosexual man