frivolity vs clowning

frivolity and clowning both are nouns.

Word	Noun	Adjective	Verb	Adverb
frivolity	Yes	No	No	No
clowning	Yes	No	No	No

As nouns, frivolity and clowning are synonyms defined as:

Other synonyms of frivolity include buffoonery, harlequinade, japery, prank.

frivolity (noun)	clowning (noun)
acting like a clown or buffoon	acting like a clown or buffoon
something of little value or significance	a comic incident or series of incidents
the trait of being frivolous; not serious or sensible