A lawyer is a person skilled and trained in the field of law. Lawyers help correct wrongs, maintain the stability of political and social authority, and deliver justice. Lawyers use practical application of abstract legal theories and knowledge to solve specific individualized problems. Lawyers argue a case in a court. Lawyers are divided into specialists, such as a criminal lawyer, corporate lawyer, and family lawyer among others. Lawyers provide expert legal advice on issues uncommon to a layman. Lawyers deal from client communication to case management, to pleadings and hearings, adjust bails and depositions etc.