good humour vs good temper

good humour and good temper both are nouns.

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

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

Other synonyms of good humour include amiability, good humor.

good humour (noun)	good temper (noun)
a cheerful and agreeable mood	a cheerful and agreeable mood