temperament vs emotionality

temperament and emotionality both are nouns.

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

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

temperament: excessive emotionalism or irritability and excitability (especially when displayed openly)
emotionality: emotional nature or quality

Other hypernyms of temperament include emotionalism.

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