pettifogger vs shyster

pettifogger and shyster both are nouns.

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

As nouns, pettifogger and shyster are synonyms defined as:

pettifogger and shyster: a person (especially a lawyer or politician) who uses unscrupulous or unethical methods

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