joviality vs amiability

joviality and amiability both are nouns.

Word	Noun	Adjective	Verb	Adverb
joviality	Yes	No	No	No
amiability	Yes	No	No	No

As nouns, amiability is a hypernym of joviality; that is, amiability is a word with a broader meaning than joviality:

Other hypernyms of joviality include gaiety, merriment, good humor, good humour, good temper.

joviality (noun)	amiability (noun)
a jovial nature	a disposition to be friendly and approachable (easy to talk to)
feeling jolly and jovial and full of good humor	a cheerful and agreeable mood