bagatelle vs frivolity

bagatelle and frivolity both are nouns.

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

As nouns, bagatelle and frivolity are synonyms defined as:

Other synonyms of bagatelle include fluff, frippery.

bagatelle (noun)	frivolity (noun)
a table game in which short cues are used to knock balls into holes that are guarded by wooden pegs; penalties are incurred if the pegs are knocked over	acting like a clown or buffoon
something of little value or significance	something of little value or significance
a light piece of music for piano	the trait of being frivolous; not serious or sensible