trivial vs piddling

trivial and piddling both are adjectives.

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

As adjectives, trivial and piddling are synonyms defined as:

Other synonyms of trivial include fiddling, footling, lilliputian, little, niggling, petty, picayune, piffling.

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