contrariness vs perversity

contrariness and perversity both are nouns.

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

As nouns, contrariness and perversity are synonyms defined as:

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

Other synonyms of contrariness include perverseness.

contrariness (noun)	perversity (noun)
a fussy and eccentric disposition	deliberately deviating from what is good
deliberate and stubborn unruliness and resistance to guidance or discipline	deliberate and stubborn unruliness and resistance to guidance or discipline