An agreement is an expansionary approach that includes any agreement or understanding between two or more parties on their rights and obligations with respect to the other. Such informal agreements often take the form of gentlemen`s agreements, in which compliance with the terms of the agreement is based on the honour of the parties concerned and not on external means of implementation. The subject-verb agreement means that the subject and verb must correspond in capital letters and in small and number. A contract is a particular type of agreement that satisfies certain requirements to create legally binding obligations between the parties that may be imposed by a court. If there is more than one subject, the verb must be in the plural. Even though each subject is itself singular, more than one subject requires a plural abrament. Any contractual agreement concluded between two parties for illegal activities is also considered an unde concluded contract. For example, a contract between an illegal drug supplier and a dealer is a priori unenforceable because of the illegal nature of the agreed activity. For simple sentences, the subject-verb correspondence is not difficult to find. Contractions must also use the right adaptation of the subject and verb. The best way to determine the conjugation to use with a contraction is to separate the terms. However, the correspondence between the subject and the verb can be difficult if the construction of the subject changes. As long as a contract meets the above requirements, it is enforceable in court, meaning that a court can compel a non-conforming party to comply with the terms of the contract.