wildness vs wilfulness

wildness and wilfulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
wildness	Yes	No	No	No
wilfulness	Yes	No	No	No

As nouns, wilfulness is a hypernym of wildness; that is, wilfulness is a word with a broader meaning than wildness:

Other hypernyms of wildness include fractiousness, unruliness, willfulness.

wildness (noun)	wilfulness (noun)
an intractably barbarous or uncultivated state of nature	the trait of being prone to disobedience and lack of discipline
an unruly disposition to do as one pleases
the property of being wild or turbulent
a feeling of extreme emotional intensity