| A | B |
|---|
| Unilateral mistake | An error on the part of one of the parties of the contract |
| Bilateral Mistake | An error on the part of both of the parties to the contract |
| Fraud | Deliberate deception to secure an unfair or unlawful gain |
| Rescind | To cancel; to annul |
| Material fact | Fact that is important; it matters to one of the parties involved |
| Concealment | False representation by not saying something that should be said; nondisclosure |
| Misrepresentation | untrue statement of facts, which may or may not be innocent |
| Duress | overcoming a person's will by use of force or by threat of force or bodily harm |
| Economic duress | Threats to a person's business or income to cause him or her to enter a contract without real consent |
| Undue influence | Unfair and improper persuasive pressure exercised by one person in a relationship of trust with another person |
