advocate

(noun) a person who pleads for a cause or propounds an idea. Synonyms: advocator, proponent, exponent.

(noun) a lawyer who pleads cases in court. Synonyms: counsel, counselor, counsellor, counselor-at-law, pleader.

(verb) push for something. Synonyms: recommend, urge. Example: "The travel agent recommended strongly that we not travel on thanksgiving day."

(verb) speak, plead, or argue in favor of. Synonyms: preach. Example: "The doctor advocated a smoking ban in the entire house."