succuba vs demon

succuba and demon both are nouns.

Word	Noun	Adjective	Verb	Adverb
succuba	Yes	No	No	No
demon	Yes	No	No	No

As nouns, demon is a hypernym of succuba; that is, demon is a word with a broader meaning than succuba:

succuba: a female demon believed to have sexual intercourse with sleeping men
demon: an evil supernatural being

Other hypernyms of succuba include daemon, daimon, devil, fiend.

succuba (noun)	demon (noun)
a female demon believed to have sexual intercourse with sleeping men	an evil supernatural being
	a cruel wicked and inhuman person
	someone extremely diligent or skillful