| A | B |
| Collateral Promise | Promise to pay a debt or default of another |
| Contract of Adhesion | Contract in which the more powerful party dictates all the important terms |
| Executed Contract | Contract that has been fully performed |
| Executory Contract | Contract that has not been fully performed |
| Integration Clause | Contract clause stating both parties agree written contract terms constitute entire, final agreement. |
| Main Purpose Rule | Third party liable for oral promise to pay another's debt if main purpose serves promisor's own interest |
| Parties' Principal Objective | Interpreting a contract based on main goals of parties |
| Parol Evidence | Spoken words inadmissible in court |
| Parol Evidence Rule | Oral testimony cannot be used to contradict a complete, final, written contract. |
| Parol Statements | Spoken words inadmissible in court. |
| Perjury | Crime of lying under oath |
| Primary Promise | Promise to pay another's debt that is not conditioned on another person's failure to pay. |
| Quasi-Contract | Obligation enforced as a contract to prevent unjust enrichment of one party. |
| Statute of Frauds | Certain agreements must be evidenced by signed writing to be enforceable |
| Within the Statute of Frauds | Contracts required to be in writing to be enforceable in court. |
| Without the Statute of Frauds | Contracts not governed by the statute of frauds, not required to be in writing |