good nature vs goodwill

good nature and goodwill both are nouns.

Word	Noun	Adjective	Verb	Adverb
good nature	Yes	No	No	No
goodwill	Yes	No	No	No

As nouns, goodwill is a hyponym of good nature; that is, goodwill is a word with a more specific, narrower meaning than good nature:

Other hyponyms of good nature include good will, grace, forbearance, longanimity, patience, easygoingness, risibility.

good nature (noun)	goodwill (noun)
a cheerful, obliging disposition	a disposition to kindness and compassion
	the friendly hope that something will succeed
	(accounting) an intangible asset valued according to the advantage or reputation a business has acquired (over and above its tangible assets)