emotionlessness vs unemotionality

emotionlessness and unemotionality both are nouns.

Word	Noun	Adjective	Verb	Adverb
emotionlessness	Yes	No	No	No
unemotionality	Yes	No	No	No

As nouns, emotionlessness and unemotionality are synonyms defined as:

As nouns, emotionlessness and unemotionality are synonyms defined as:

emotionlessness and unemotionality: apathy demonstrated by an absence of emotional reactions

Other synonyms of emotionlessness include impassiveness, impassivity, indifference, phlegm, stolidity.

emotionlessness (noun)	unemotionality (noun)
absence of emotion	absence of emotion
apathy demonstrated by an absence of emotional reactions	apathy demonstrated by an absence of emotional reactions