A planisphere is a map that represents the entire surface of the earth in a single projection plane. When the map is divided into two hemispheres by longitude and projected side by side in two large circles, we talk about the world map, which shows less and less in common. Do not confuse the world map with the globe, which represents the volume of the Earth. (Source: F. Joly. La Cartographie. PUF, 1999)

See also: Cartography