amiability vs joviality

amiability and joviality both are nouns.

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

As nouns, joviality is a hyponym of amiability; that is, joviality is a word with a more specific, narrower meaning than amiability:

Other hyponyms of amiability include jolliness, jollity.

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