stolidity vs emotionlessness

stolidity and emotionlessness both are nouns.

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

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

Other hypernyms of stolidity include unemotionality.

As nouns, stolidity and emotionlessness are synonyms defined as:

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

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

stolidity (noun)	emotionlessness (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