Complete the gaps in the text with one word only.

When alternative methods of resolving conflicts fail, people will start litigation process, i.e. bring argument to trial, start (1 p.) or file a lawsuit against another party to seek (1 p.) .

The Complaint

The first stage of the litigation process is the pleading stage during which the complaint or the claim is filed, issued or (1 p.) .
The Complaint is a formal legal document describing the facts and legal basis in support of the claim by the aggravated party (now known as the (1 p.) and earlier as the (1 p.) ) for relief against another party (known as the defendant) alleged to be responsible for causing the legal harm about which the plaintiff is complaining.

In a Tort case this relief usually takes the form of a demand for monetary damages. After the Complaint is officially filed with the clerk of the court in the jurisdiction where the lawsuit has been brought, a copy is also personally delivered to the defendant by the authorized official of the court.

The Answer

After the Complaint has been (1 p.) upon the defendant, that party has a specified period of time within which to file a formal written response to the claimant’s Complaint with the court. In most jurisdictions this period of time is about thirty days. The most typical form of written response to a Complaint in a Tort case is referred to as an Answer, in which the defendant formally must either agree or disagree with each specific allegation asserted in the claimant’s Complaint.

In addition to any defensive pleadings, the defendant at this time may also wish to assert a (1 p.) (a separate Complaint against the plaintiff), or even a Cross Claim (a separate Complaint against some third party that arises out of the same factual occurrence).
Taken together, the claimant’s Complaint and the defendant's Answer and all other related filings are commonly referred to as the (1 p.) in the case.