Humanities › Geography Greenland and Australia: Continents or Not? Share Flipboard Email Print oversnap/Getty Images Geography Basics Physical Geography Political Geography Population Country Information Key Figures & Milestones Maps Urban Geography By Matt Rosenberg Geography Expert M.A., Geography, California State University - Northridge B.A., Geography, University of California - Davis Matt Rosenberg is an award-winning geographer and the author of "The Handy Geography Answer Book" and "The Geography Bee Complete Preparation Handbook." our editorial process Matt Rosenberg Updated December 31, 2018 Why is Australia a continent and Greenland is not? The definition of a continent varies, so the number of continents ranges between five and seven continents. Generally, a continent is one of the major land masses on earth. However, in every accepted definition of continents, Australia is always included as a continent (or is part of an "Oceania" continent) and Greenland is never included. Different Definitions of Continents While that definition might not hold water for some people, there is no official globally recognized definition of a continent. Just as some seas are called seas and others are called gulfs or bays, continents generally refer to the major land masses of earth. Even though Australia is the smallest of the accepted continents, Australia is still more than 3.5 times larger than Greenland. There has to be a line in the sand between the small continent and the world's largest island, and traditionally that line exists between Australia and Greenland. Besides size and tradition, one can make the argument geologically. Geologically, Australia lies on its own major tectonic plate while Greenland is part of the North American plate. Locally, residents of Greenland consider themselves islanders while many in Australia see their county as a continent. Even though the world lacks official definitions for a continent, it should be concluded that Australia is a continent and Greenland is an island. On a related note, I will here state my objection to including Australia as part of a "continent" of Oceania. Continents are land masses, not regions. It is completely appropriate to divide the planet into regions (and, in fact, this is quite preferable to dividing the world into continents), regions make better sense than continents and they can be standardized.