Capacity refers to the legal ability of a person to enter into a contract. It is not an essential element of a valid contract, as a contract can be valid even if one or both parties lack capacity.

The primary purpose of a contract is to create a legally enforceable obligation between the parties involved. This means that the parties are bound to perform their respective obligations as specified in the contract.

A unilateral contract is not a type of contract. A unilateral contract is a promise made by one party in exchange for an act or performance by the other party. It is not a true contract because there is no mutual exchange of promises.

An offer is a definite proposal made to a specific person, with the intention of creating a legally binding contract. An invitation to treat is a mere statement of willingness to negotiate, and is not binding.

Acceptance of an offer creates a legally binding contract between the parties involved. The terms of the contract are determined by the offer and the acceptance.

An express warranty is a specific and detailed statement made by the seller about the quality or performance of a product. An implied warranty is a general and broad warranty that is implied by law, regardless of whether the seller makes any specific statements about the product.

A breach of contract occurs when one party fails to perform their obligations as specified in the contract. The non-breaching party is entitled to damages, specific performance, or rescission of the contract, depending on the circumstances.

The Statute of Frauds is a law that requires certain types of contracts to be in writing in order to be enforceable. These types of contracts include contracts for the sale of land, contracts for the sale of goods over a certain value, and contracts that cannot be performed within one year.

A void contract is illegal and unenforceable from the beginning, while a voidable contract is valid until it is set aside by a court. A void contract cannot be ratified, while a voidable contract can be ratified.

A novation is a legal agreement that discharges an existing contract and replaces it with a new contract. The new contract may have different terms and conditions than the old contract.

An assignment transfers the rights under a contract to a third party, while a delegation transfers the duties under a contract to a third party. An assignment is made with the consent of the other party to the contract, while a delegation is made without the consent of the other party to the contract.

A frustration of purpose occurs when an event makes it impossible or impracticable to perform a contract. This discharges the existing contract and the parties are relieved of their obligations.

A condition precedent must occur before a contract can be performed, while a condition subsequent must occur after a contract has been performed. A condition precedent is imposed by law, while a condition subsequent is imposed by the parties to the contract.

A merger clause integrates all prior negotiations and agreements into the written contract. This means that the written contract is the final and complete agreement between the parties, and any prior negotiations or agreements are superseded by the written contract.

A liquidated damages clause is a reasonable estimate of the actual damages that will be suffered in the event of a breach of contract, while a penalty clause is an unreasonable estimate of the actual damages. A liquidated damages clause is enforceable, while a penalty clause is unenforceable.