After the construct has been made by the parties, they may agree to discharge the contract or change their contractual obligation by negotiating another agreement. The parties can discharge their original contract in following ways:Mutual discharge: When both the parties involved in the contract agree not to proceed with their obligations.Release: When one party involved in the contract releases from future obligations.Waiver: When an agreement is changed to the benefit of only one party.Novation: When a contract by one is replaced by another someone else.Merger: When a lesser agreement such as a simple contract is overcome by a later and greater agreement such as a deed having similar terms.