This document discusses the various modes of discharge of contracts under business law. There are six main modes of discharge: 1) by performance, when both parties fulfill their contractual obligations; 2) by consent or agreement, when parties mutually agree to alter or cancel the contract; 3) by lapse of time, if a legal action is not taken within the limitation period; 4) by operation of law, due to events like insolvency, death or court judgment; 5) by impossibility of performance, if the contract becomes impossible or unlawful to perform; and 6) by breach, if a party fails to perform without a valid excuse. Each mode is explained with examples of how a contract can be discharged through that particular means