| A | B |
| contract of adhesion | A contract in which the stronger party prepares and sets most of the terms |
| executed contract | A contract that has been fully performed by all parties |
| executory contract | A contract that is not fully finished or executed |
| express contract | A contract that is stated in words or in writing |
| formal contract | A contract with notarization, and may be under seal |
| implied contract | A contract which is made by acting correctly in a situation |
| notary public | A public officer who certifies signatures on deeds and contracts |
| parol evidence rule | A rule that says only the contract itself may be admitted as evidence during legal proceedings |
| quasi contract | A contract that is formed by the state to prevent unjust enrichment of one party |
| simple contract | A non-formal contract |
| statute of frauds | A rule that says certain contracts must be in writing to be enforceable |