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.

One who has possession of real estate; an occupant, not necessarily a renter; the lessee under a lease. The estate or interest held is called a tenancy.

civil action brought before a court in order to recover a right, obtain damages for an injury, obtain an injunction to prevent an injury, or obtain a declaratory judgment to prevent future legal disputes. It usually involves dispute resolution of private law issues between individuals, business entities or non-profit organizations. However, it may involve public law issues in those jurisdictions that enable the government to be treated as if it were a private party in a lawsuit

A legal term that encompasses land along with anything permanently affixed to the land, such as buildings. Real estate is often considered synonymous with real property (also sometimes called realty), in contrast with personal property, chattel, or personalty.