levity vs jocosity

levity and jocosity both are nouns.

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

As nouns, jocosity is a hyponym of levity; that is, jocosity is a word with a more specific, narrower meaning than levity:

Other hyponyms of levity include flippancy, light-mindedness, humorousness, jocoseness, merriness, anecdotalism.

levity (noun)	jocosity (noun)
a manner lacking seriousness	the trait of merry joking
feeling an inappropriate lack of seriousness	fun characterized by humor