angel vs supernatural being

angel and supernatural being both are nouns.

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

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

angel: spiritual being attendant upon God
supernatural being: an incorporeal being believed to have powers to affect the course of human events

Other hypernyms of angel include spiritual being.

angel (noun)	supernatural being (noun)
spiritual being attendant upon God	an incorporeal being believed to have powers to affect the course of human events
someone who provides financial support for some venture
person of exceptional holiness