quibbler vs caviler

quibbler and caviler both are nouns.

Word	Noun	Adjective	Verb	Adverb
quibbler	Yes	No	No	No
caviler	Yes	No	No	No

As nouns, quibbler and caviler are synonyms defined as:

quibbler and caviler: a disputant who quibbles; someone who raises annoying petty objections

Other synonyms of quibbler include caviller, pettifogger.

quibbler (noun)	caviler (noun)
a disputant who quibbles; someone who raises annoying petty objections	a disputant who quibbles; someone who raises annoying petty objections