triviality vs pettiness

triviality and pettiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
triviality	Yes	No	No	No
pettiness	Yes	No	No	No

As nouns, triviality and pettiness are synonyms defined as:

triviality and pettiness: the quality of being unimportant and petty or frivolous

Other synonyms of triviality include puniness, slightness.

triviality (noun)	pettiness (noun)
something of small importance	the quality of being unimportant and petty or frivolous
the quality of being unimportant and petty or frivolous	lack of generosity in trifling matters
a detail that is considered insignificant	narrowness of mind or ideas or views