good-naturedness vs good-humouredness

good-naturedness and good-humouredness both are nouns.

Word	Noun	Adjective	Verb	Adverb
good-naturedness	Yes	No	No	No
good-humouredness	Yes	No	No	No

As nouns, good-naturedness and good-humouredness are synonyms defined as:

good-naturedness and good-humouredness: a cheerful willingness to be obliging

Other synonyms of good-naturedness include good-humoredness, good-temperedness.

good-naturedness (noun)	good-humouredness (noun)
a cheerful willingness to be obliging	a cheerful willingness to be obliging