A person, especially a public official, who institutes legal proceedings against someone.
Prosecuter
A person who's being accused of a crime.
Defendant
a formal examination of evidence before a judge, and typically before a jury, in order to decide guilt in a case of criminal or civil proceedings.
trial
How should we adress a judge?
Your honor
a person trained in subsidiary legal matters but not fully qualified as a lawyer.
Paralegal
a place where trials and legal cases are decided, or the group of people who deal with legal cases there.
Court of law
A person who has seen a crime being commited.
witness