good-humouredness vs sunniness

good-humouredness and sunniness both are nouns.

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

As nouns, sunniness is a hypernym of good-humouredness; that is, sunniness is a word with a broader meaning than good-humouredness:

Other hypernyms of good-humouredness include cheer, cheerfulness, sunshine.

good-humouredness (noun)	sunniness (noun)
a cheerful willingness to be obliging	lightness created by sunlight
	the quality of being cheerful and dispelling gloom