perversity vs willfulness

perversity and willfulness both are nouns.

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

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

perversity: deliberate and stubborn unruliness and resistance to guidance or discipline
willfulness: the trait of being prone to disobedience and lack of discipline

Other hypernyms of perversity include fractiousness, unruliness, wilfulness.

perversity (noun)	willfulness (noun)
deliberately deviating from what is good	the trait of being prone to disobedience and lack of discipline
deliberate and stubborn unruliness and resistance to guidance or discipline