pettifogger vs caviller

pettifogger and caviller both are nouns.

Word	Noun	Adjective	Verb	Adverb
pettifogger	Yes	No	No	No
caviller	Yes	No	No	No

As nouns, pettifogger and caviller are synonyms defined as:

pettifogger and caviller: a disputant who quibbles; someone who raises annoying petty objections

Other synonyms of pettifogger include caviler, quibbler.

pettifogger (noun)	caviller (noun)
a person (especially a lawyer or politician) who uses unscrupulous or unethical methods	a disputant who quibbles; someone who raises annoying petty objections
a disputant who quibbles; someone who raises annoying petty objections