A world map, also known as a global map, is a type of diagram that displays the Earth's surface as a whole or in parts. Other synonyms for a world map include a planetary map, global chart, world atlas, and cartographic representation of the globe. Additionally, a map of the world is sometimes referred to as a terrestrial or geographic map as it is a representation of the surface of the planet. Other words linked to world maps include topographical charts, satellite imagery, and navigational aids. Regardless of the synonym used, a map of the world remains an essential tool for navigation, education, and exploration in today's society.