demon vs succubus

demon and succubus both are nouns.

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

As nouns, succubus is a hyponym of demon; that is, succubus is a word with a more specific, narrower meaning than demon:

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

Other hyponyms of demon include incubus, succuba, dibbuk, dybbuk.

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