plead vs pleader

plead is not a noun while pleader is a noun.

Word	Noun	Adjective	Verb	Adverb
plead	No	No	Yes	No
pleader	Yes	No	No	No

plead (noun)	pleader (noun)
	a lawyer who pleads cases in court

plead (verb)	pleader (verb)
appeal or request earnestly
enter a plea, as in courts of law
offer as an excuse or plea
make an allegation in an action or other legal proceeding, especially answer the previous pleading of the other party by denying facts therein stated or by alleging new facts