demon

As nouns the difference between demon and archdemon

is that demon is an evil spirit while archdemon is a chief demon; an archdevil.

As a noun demon

is demon.

As a proper noun lilith is

(mythology) a mesopotamian storm demon, a bearer of disease and death; also the first wife of adam in jewish folklore.

As nouns the difference between demon and superbeing

is that demon is demon while superbeing is comic books: a superhero or supervillain.

As a noun demon

is an evil spirit.

As an adjective demonlike is

resembling a demon in form or action.

As a noun demon

is an evil spirit.

As a proper noun Demogorgon is

a pagan god or demon, associated with the underworld and envisaged as a powerful primordial being, whose very name was taboo; an incubus.