Answer:
These are based on the Laws on Obligations and Contracts of the Philippines.
1. Obligation is a juridical relation whereby a person (creditor) may demand from another (debtor) the observance of a determinate conduct and, in case of a breach, may obtain satisfaction from the assets of the latter.
2. Contract is the meeting of the minds between two persons whereby one binds himself, with respect to the other, to give something or to render some service
3. 5 Sources of Obligation are Law, Contracts, Quasi-Contracts, Acts or omissions punished by law, and Quasi-delicts.
4. Debtor, also known as the Passive-Subject, is the one who is bound to fulfill the obligation.
5. Creditor, also known as the Active Subject, is the one who is entitled to demand the fulfillment of the obligation.
6. Primary Kinds of Obligation are pure and conditional obligations, Obligations with a period, alternative or facultative, joint and solidary obligations, obligations with a penal clause