orneriness vs perversity

orneriness and perversity both are nouns.

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

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

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

Other hypernyms of orneriness include contrariness, perverseness.

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