high-handedness vs superbia

high-handedness and superbia both are nouns.

Word	Noun	Adjective	Verb	Adverb
high-handedness	Yes	No	No	No
superbia	Yes	No	No	No

As nouns, superbia is a hypernym of high-handedness; that is, superbia is a word with a broader meaning than high-handedness:

high-handedness: overbearing pride evidenced by a superior manner toward inferiors
superbia: unreasonable and inordinate self-esteem (personified as one of the deadly sins)

Other hypernyms of high-handedness include pride.

high-handedness (noun)	superbia (noun)
overbearing pride evidenced by a superior manner toward inferiors	unreasonable and inordinate self-esteem (personified as one of the deadly sins)