visage vs devilishness

visage and devilishness both are nouns.

Word	Noun	Adjective	Verb	Adverb
visage	Yes	No	No	No
devilishness	Yes	No	No	No

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

visage: the appearance conveyed by a person's face
devilishness: The property of resembling or being characteristic of a devil.

Other hyponyms of visage include aspect, expression, face, facial expression, look, poker face.

visage (noun)	devilishness (noun)
the appearance conveyed by a person's face	The property of resembling or being characteristic of a devil.
the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)