cussedness vs perversity

cussedness and perversity both are nouns.

Word	Noun	Adjective	Verb	Adverb
cussedness	Yes	No	No	No
perversity	Yes	No	No	No

As nouns, perversity is a hypernym of cussedness; that is, perversity is a word with a broader meaning than cussedness:

cussedness: meanspirited disagreeable contrariness
perversity: deliberate and stubborn unruliness and resistance to guidance or discipline

Other hypernyms of cussedness include contrariness, perverseness.

cussedness (noun)	perversity (noun)
meanspirited disagreeable contrariness	deliberately deviating from what is good
	deliberate and stubborn unruliness and resistance to guidance or discipline