triviality vs trivial

triviality is a noun but trivial is not a noun.

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

triviality (noun)	trivial (noun)
something of small importance
the quality of being unimportant and petty or frivolous
a detail that is considered insignificant

triviality (adjective)	trivial (adjective)
	concerned with trivialities
	of little substance or significance
	(informal) small and of little importance