perverseness vs willfulness

perverseness and willfulness both are nouns.

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

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

perverseness: 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 perverseness include fractiousness, unruliness, wilfulness.

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