Prime Meridian: Earths longitude of zero
Equator: Earths latitude of zero that divides the earth into northern and Southern Hemispheres
Hemisphere: A half of the celestial sphere (Earth) divided in two halves by the equator or horizon
Region: An area or part of a country with definable characteristics but not always fixed boundaries
Continent: Any of the earth’s main continuous expanses of land
Nation: A large body of people United by a common descent inhabiting a particular territory