petitioner vs suer

petitioner and suer both are nouns.

Word	Noun	Adjective	Verb	Adverb
petitioner	Yes	No	No	No
suer	Yes	No	No	No

As nouns, petitioner and suer are synonyms defined as:

petitioner and suer: someone who petitions a court for redress of a grievance or recovery of a right

petitioner (noun)	suer (noun)
one praying humbly for something	someone who petitions a court for redress of a grievance or recovery of a right
someone who petitions a court for redress of a grievance or recovery of a right	a man who courts a woman