/ˈædvəˌkeɪtə/ – Noun
Definition: 1. người kháng án, người chống án;
2. người bảo đảm quyền sở hữu hợp pháp.
A more thorough explanation: An advocator is a person who pleads or argues a cause, especially in a court of law. This term is closely related to “advocate” and is sometimes used interchangeably.
Example: The lawyer acted as an advocator for the defendant in the court case.