| A | B |
| Impossibility of performance due to death or illness | Death or illness that prevents performance of a personal service contract |
| Destruction of exact subject matter | If the subject matter that is essential to the perfromance of the contract is destroyed through no fault of either party, the contract is discharged. |
| Impossibility of performance due to illegality | A contract is considered void if its perfromance would be illegal at the time the agreement was initiated and when performance becomes illegal after the contract has been initiated. |
| Wrongful alteration | Altering or changing a contract .. results in discharge by operation of law. |
| Statute of Limitations | All states have a law that specifies in what time a legal action may be brought on a contract. |
| bankruptcy laws | Set procedures from discharging a debtor's obligations. |
| substantial performance | slightly less than full performance |
| tender | An offer to do what you have agreed to do under a contract |
| legal tender | US Coins or currency |
| Mutual Release | An agreement between two parties to end an agreement. |
| accord and satisfaction | Often used to settle an honest disagreement or unforeseen circumstances regarding an amount owed. |
| Reasonable time | The time that is suitable, fair, and proper to the objective in view/ |