stolidity vs unemotionality

stolidity and unemotionality both are nouns.

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

As nouns, unemotionality is a hypernym of stolidity; that is, unemotionality is a word with a broader meaning than stolidity:

Other hypernyms of stolidity include emotionlessness.

As nouns, stolidity and unemotionality are synonyms defined as:

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

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

stolidity (noun)	unemotionality (noun)
an indifference to pleasure or pain	absence of emotion
apathy demonstrated by an absence of emotional reactions	apathy demonstrated by an absence of emotional reactions