sedulity vs sedulousness

sedulity and sedulousness both are nouns.

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

As nouns, sedulity and sedulousness are synonyms defined as:

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

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