unwillingness vs temperament

unwillingness and temperament both are nouns.

Word	Noun	Adjective	Verb	Adverb
unwillingness	Yes	No	No	No
temperament	Yes	No	No	No

As nouns, temperament is a hypernym of unwillingness; that is, temperament is a word with a broader meaning than unwillingness:

Other hypernyms of unwillingness include disposition.

unwillingness (noun)	temperament (noun)
the trait of being unwilling	an adjustment of the intervals (as in tuning a keyboard instrument) so that the scale can be used to play in different keys
	your usual mood
	excessive emotionalism or irritability and excitability (especially when displayed openly)