A Bill of Complaint is a legal document filed by a plaintiff to initiate a lawsuit. It is a formal and systematic account of the plaintiff's grievances against the defendant for a specific cause of action that provides the court with an understanding of the case. In legal documents, using synonyms to avoid repetition can improve readability and clarity. Some synonyms for Bill of Complaint include, "complaint," "petition," "declaration," "indictment," "pleading," and "statement of claim." Each of these terms refers to a legal document that initiates legal proceedings. Therefore, using these synonyms interchangeably is acceptable. In conclusion, a Bill of Complaint used in legal proceedings can be referred to by various synonyms that essentially mean the same thing.