jocosity vs jocularity

jocosity and jocularity both are nouns.

Word	Noun	Adjective	Verb	Adverb
jocosity	Yes	No	No	No
jocularity	Yes	No	No	No

As nouns, jocosity and jocularity are synonyms defined as:

jocosity (noun)	jocularity (noun)
the trait of merry joking	activity characterized by good humor
fun characterized by humor	fun characterized by humor
	a feeling of facetious merriment