pleader vs counselor-at-law

pleader and counselor-at-law both are nouns.

Word	Noun	Adjective	Verb	Adverb
pleader	Yes	No	No	No
counselor-at-law	Yes	No	No	No

As nouns, pleader and counselor-at-law are synonyms defined as:

Other synonyms of pleader include advocate, counsel, counsellor, counselor.

pleader (noun)	counselor-at-law (noun)
a lawyer who pleads cases in court	a lawyer who pleads cases in court