Русско-англо-русский юридический словарь

In legal terminology, a complaint is any formal legal document that sets out the facts and legal reasons (see: cause of action) that the filing party or parties (the plaintiff(s)) believes are sufficient to support a claim against the party or parties against whom the claim is brought (the defendant(s)) that entitles the plaintiff(s) to a remedy (either money damages or injunctive relief). For example, the Federal Rules of Civil Procedure (FRCP) that govern civil litigation in United States courts provide that a civil action is commenced with the filing or service of a pleading called a complaint. Civil court rules in states that have incorporated the Federal Rules of Civil Procedure use the same term for the same pleading. (Wikipedia)

Advocacy is the act of pleading for or arguing in favor of something or actively supporting a cause or proposal. It can also refer to the work or profession of an advocate. For lawyers advocacy means representing the interests of the client in the best manner possible. Advocacy is considered an art in which lawyers are trained. (USLegal)

She also added that Nida, who initially faced up to 30 years behind bars after pleading guilty to charges of fraud and money laundering, got the lighter sentencing due to 'voluntary surrender'. (Daily Mail)

A crossclaim is a claim asserted between codefendants or coplaintiffs in a case and that relates to the subject of the original claim or counterclaim according to Black's Law Dictionary. A cross claim is filed against someone who is a co-defendant or co-plaintiff to the party who originates the crossclaim. In common law, a crossclaim is a demand made in a pleading that is filed against a party which is on the "same side" of the lawsuit. (Wikipedia)