Asia is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa.
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km 2 including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions.
North America is the third largest continent in the world. Columbus discovered it in 1492 AD. It is, thus, named ‘The Continent of New World.’ It takes its name from Amerigo Vespucci.
The fourth largest of the world’s continents. It is the southern portion of the landmass generally referred to as the New World, the Western Hemisphere, or simply the Americas.
The name Oceania is used, rather than Australia, because unlike the other continental groupings, it is the ocean rather than the continent that links the nations together.