trivia vs bagatelle

trivia and bagatelle both are nouns.

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

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

Other hyponyms of trivia include fluff, frippery, frivolity.

trivia (noun)	bagatelle (noun)
something of small importance	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
	something of little value or significance
	a light piece of music for piano