good humor vs good temper

good humor and good temper both are nouns.

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

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

Other synonyms of good humor include amiability, good humour.

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