Ownership means the domination or right of use, control and disposition that can be lawfully exercised over things, objects or lands. One of the fundamental dividing lines between property is that between real estate and personal property. In general, the term real estate refers to land. The earth, in its general use, includes not only the face of the earth, but everything that is permanent in nature above or below. These include structures and minerals. In the real estate classification, there are other subdivisions. The most important are real estate, non-real estate and simultaneous property. (Others are future interests, special goods, and intangible interests.) In most cases, states have exclusive jurisdiction over land within their borders, and their law on the type of interests that can be held and how they are created is not subject to federal law, see real estate transactions. .