A contract is a meeting of minds between two person.
Commutative when the undertaking of one party is considered the equivalent of that of the other.
Aleatory- when it depends uponon uncertain event or contingency both as to benefit or loss.
Unilateral when it creates an obligation on the part of only one of the parties.
Bilateral when it gives rise to reciprocal obligations for both parties.
Executory it has not yet been completely performed by both parties.
Executed when it has been fully and satisfactorily carried out by both parties.
Preparatory it is entered into means to an end.
Accessory it is dependent upon another contract.
Principal it does not depend for its existence and validity upon another contract.
Indivisible each of the contract is dependent upon other parts. (e.g., sale of a dining room table and 8 matching chairs.)
Divisible one part of the contract may be satisfactorily performed independently of the other parts. (e.g., sale of rocking chair and a pair of shoes.)
Valid contracts are those that meet all the legal requisites for the type of agreement.
Police power when there is no law in existence or when the law is silent.
Morals deal with norms of good and right conduct evolved in a community.
Public order refers principally to public safety although it has been considered to mean also the public weal.
Public policy is broader than public order, as the former may not only public safety.
Nominatecontract a specific name or designation in law.
Innominate contract has no specific name or designation in law.
Generalrule a party's rights and obligations derived from a contract are transmissible to the successors.
Exceptions a contract are effective only between the parties.
Third person is one who has not taken part in a contract and a stranger to the contract.
Stipulation pour autrui is a stipulation in a contract clearly and deliberately conferring a favor upon a third person.
Consensual contract is perfected by mere consent.
Solemncontract requires compliance with certain formalities prescribed by law.
Preparation this includes all the steps taken by the parties leading to the perfection of the contract.
Real contract is perfected by the delivery of the thing subject matter of the contract.
Perfection the parties have come to a definite agreement or meeting of minds regarding the subject matter.
Consummation the parties have performed their respective obligations and the contract may have been full accomplished.
Essential elements without no contract can validly exist regardless of the intentions of the parties.
Natural elements presumed to exist in certain contracts unless the contrary is expressly stipulated.
Accidental elements the particular stipulations clauses, terms, or conditions established by the parties in their contract.
Consent is the conformity or concurrence of wills.
Offer is a proposal made by one party to another.
Option contract giving a person for a consideration a certain period
Option period given within which the offeree must accept the offer.
Option money is the money paid or promised to be paid in consieration.
Unemancipated minors those persons who have not yet reached the age of 18