sedulousness vs sedulity

sedulousness and sedulity both are nouns.

Word	Noun	Adjective	Verb	Adverb
sedulousness	Yes	No	No	No
sedulity	Yes	No	No	No

As nouns, sedulousness and sedulity are synonyms defined as:

sedulousness and sedulity: the quality of being constantly diligent and attentive

sedulousness (noun)	sedulity (noun)
the quality of being constantly diligent and attentive	the quality of being constantly diligent and attentive