good temper vs amiability

good temper and amiability both are nouns.

Word	Noun	Adjective	Verb	Adverb
good temper	Yes	No	No	No
amiability	Yes	No	No	No

As nouns, good temper and amiability are synonyms defined as:

Other synonyms of good temper include good humor, good humour.

good temper (noun)	amiability (noun)
a cheerful and agreeable mood	a disposition to be friendly and approachable (easy to talk to)
	a cheerful and agreeable mood