Commercial law or business law is the body of law which governs business and commerce and is often considered to be a branch of civil law and deals both with issues of private law and public law. Commercial law regulates corporate contracts, hiring practices, and the manufacture and sales of consumer goods.

A contract is any legally-enforceable promise or set of promises made by one party to another and, as such, reflects the policies represented by freedom of contract. In the civil law, contracts are considered to be part of the general law of obligations.

A creditor is a party (e.g. person, organization, company, or government) that claims that a second party owes the first party some property or service. The first party, in general, has provided some property or service to the second party under the assumption (usually enforced by contract) that the second party will return an equivalent property or service. The first party is frequently called a lender, and the second party is frequently called a debtor or borrower.

A civil action in which a party claims some sort of damage to their person caused by another party. These might be negligence actions (such as a car crash), or an intentional action (such as an assault or trespass).