A kind of contract is a legal agreement between two or more parties that is enforceable by law. SWEETHEART (10 letters) is a term used to describe an agreement that is especially favorable to one party, usually at the expense of another. Sweeth (6 letters) is a term used to describe an agreement that is mutually beneficial to both parties. ORAL (4 letters) is a type of contract that is not written down but is still legally binding. Yellowdog (9 letters) is a type of contract that requires an employee to agree not to join a union as a condition of employment.