ugliness vs enormity

ugliness and enormity both are nouns.

Word	Noun	Adjective	Verb	Adverb
ugliness	Yes	No	No	No
enormity	Yes	No	No	No

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

Other hyponyms of ugliness include filthiness.

ugliness (noun)	enormity (noun)
qualities of appearance that do not give pleasure to the senses	an act of extreme wickedness
the quality of being wicked	the quality of extreme wickedness
	the quality of being outrageous
	vastness of size or extent