Island - wikipedia Island For other uses, see Island ( disambiguation ). Atafu atoll in Tokelau A small Fijian island The British Isles are a large group of islands. The main islands are Great Britain and Ireland. A small island in Lower Saranac Lake in the Adirondacks in the U.S. Bangchuidao Island is an islet composed mostly of rock, in Dalian, Liaoning Province, China. The islands of Fernando de Noronha, Brazil, are the visible parts of submerged mountains. A subterranean isle in Cross Cave Manhattan, U.S. is home to over 1.6 million people. Hawaiian islands from space Kansai Airport is built on an artificial island in Japan. An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. A grouping of geographically or geologically related islands is called an archipelago, e.g. the Philippines. An island may be described as such, despite the presence of an artificial land bridge ; examples are Singapore and its causeway, and the various Dutch delta islands, such as IJsselmonde. Some places may even retain `` island '' in their names for historical reasons after being connected to a larger landmass by a land bridge or landfill, such as Coney Island and Coronado Island, though these are strictly tied islands. Conversely, when a piece of land is separated from the mainland by a man - made canal, for example the Peloponnese by the Corinth Canal or Marble Hill in northern Manhattan during the time between the building of the United States Ship Canal and the filling - in of the Harlem River which surrounded the area, it is generally not considered an island. There are two main types of islands in the sea : continental and oceanic. There are also artificial islands. Contents 1 Etymology 2 Difference between islands and continents 3 Types of islands 3.1 Continental islands 3.2 Oceanic islands 3.3 Tropical islands 4 Artificial islands 5 Island superlatives 6 See also 7 References 8 External links Etymology The word island derives from Middle English iland, from Old English igland ( from ig or ieg, similarly meaning ' island ' when used independently, and - land carrying its contemporary meaning ; cf. Dutch eiland ( `` island '' ), German Eiland ( `` small island '' ) ). However, the spelling of the word was modified in the 15th century because of a false etymology caused by an incorrect association with the etymologically unrelated Old French loanword isle, which itself comes from the Latin word insula. Old English ieg is actually a cognate of Swedish ö and German Aue, and related to Latin aqua ( water ). Difference between islands and continents Greenland is the world 's largest island, with an area of over 2.1 million km, while Australia, the world 's smallest continent, has an area of 7.6 million km, but there is no standard of size which distinguishes islands from continents, or from islets. There is a difference between islands and continents in terms of geology. Continents sit on continental lithosphere which is part of tectonic plates floating high on Earth 's mantle. Oceanic crust is also part of tectonic plates, but it is denser than continental lithosphere, so it floats low on the mantle. Islands are either extensions of the oceanic crust ( e.g. volcanic islands ) or geologically they are part of some continent sitting on continental lithosphere ( e.g. Greenland ). This holds true for Australia, which sits on its own continental lithosphere and tectonic plate. Types of islands Continental islands Continental islands are bodies of land that lie on the continental shelf of a continent. Examples are Borneo, Java, Sumatra, Sakhalin, Taiwan and Hainan off Asia ; New Guinea, Tasmania, and Kangaroo Island off Australia ; Great Britain, Ireland, and Sicily off Europe ; Greenland, Newfoundland, Long Island, and Sable Island off North America ; and Barbados, Falklands and Trinidad off South America. A special type of continental island is the microcontinental island, which is created when a continent is rifted. Examples are Madagascar and Socotra off Africa, the Kerguelen Islands, New Caledonia, New Zealand, and some of the Seychelles. Another subtype is an island or bar formed by deposition of tiny rocks where water current loses some of its carrying capacity. This includes : barrier islands, which are accumulations of sand deposited by sea currents on the continental shelves fluvial or alluvial islands formed in river deltas or midstream within large rivers. While some are transitory and may disappear if the volume or speed of the current changes, others are stable and long - lived. Islets are very small islands. Oceanic islands Main article : High island Oceanic islands are islands that do not sit on continental shelves. The vast majority are volcanic in origin, such as Saint Helena in the South Atlantic Ocean. The few oceanic islands that are not volcanic are tectonic in origin and arise where plate movements have lifted up the ocean floor above the surface. Examples are Saint Peter and Paul Rocks in the Atlantic Ocean and Macquarie Island in the Pacific. One type of volcanic oceanic island is found in a volcanic island arc. These islands arise from volcanoes where the subduction of one plate under another is occurring. Examples are the Aleutian Islands, the Mariana Islands, and most of Tonga in the Pacific Ocean. The only examples in the Atlantic Ocean are some of the Lesser Antilles and the South Sandwich Islands. Another type of volcanic oceanic island occurs where an oceanic rift reaches the surface. There are two examples : Iceland, which is the world 's second largest volcanic island, and Jan Mayen. Both are in the Atlantic. A third type of volcanic oceanic island is formed over volcanic hotspots. A hotspot is more or less stationary relative to the moving tectonic plate above it, so a chain of islands results as the plate drifts. Over long periods of time, this type of island is eventually `` drowned '' by isostatic adjustment and eroded, becoming a seamount. Plate movement across a hot - spot produces a line of islands oriented in the direction of the plate movement. An example is the Hawaiian Islands, from Hawaii to Kure, which continue beneath the sea surface in a more northerly direction as the Emperor Seamounts. Another chain with similar orientation is the Tuamotu Archipelago ; its older, northerly trend is the Line Islands. The southernmost chain is the Austral Islands, with its northerly trending part the atolls in the nation of Tuvalu. Tristan da Cunha is an example of a hotspot volcano in the Atlantic Ocean. Another hot spot in the Atlantic is the island of Surtsey, which was formed in 1963. An atoll is an island formed from a coral reef that has grown on an eroded and submerged volcanic island. The reef rises to the surface of the water and forms a new island. Atolls are typically ring - shaped with a central lagoon. Examples are the Line Islands in the Pacific and the Maldives in the Indian Ocean. Tropical islands See also : Formation of coral reefs Approximately 45,000 tropical islands with an area of at least 5 hectares ( 12 acres ) exist. Examples formed from coral reefs include Maldives, Tonga, Samoa, Nauru, and Polynesia. Granite islands include Seychelles and Tioman and volcanic islands such as Saint Helena. The socio - economic diversity of tropical islands ranges from the Stone Age societies in the interior of Madagascar, Borneo, and Papua New Guinea to the high - tech lifestyles of the city - islands of Singapore and Hong Kong. International tourism is a significant factor in the economy of many tropical islands including Seychelles, Sri Lanka, Mauritius, Réunion, Hawaii, and the Maldives. Artificial islands Main article : Artificial island Almost all of the Earth 's islands are natural and have been formed by tectonic forces or volcanic eruptions. However, artificial ( man - made ) islands also exist, such as the island in Osaka Bay off the Japanese island of Honshu, on which Kansai International Airport is located. Artificial islands can be built using natural materials ( e.g., earth, rock, or sand ) or artificial ones ( e.g., concrete slabs or recycled waste ). Sometimes natural islands are artificially enlarged, such as Vasilyevsky Island in the Russian city of St. Petersburg, which had its western shore extended westward by some 0.5 km in the construction of the Passenger Port of St. Petersburg. Artificial islands are sometimes built on pre-existing `` low - tide elevation '', a naturally formed area of land which is surrounded by and above water at low tide but submerged at high tide. Legally it is not an island and has no territorial sea of its own. Island superlatives Largest island : Greenland Largest island in a lake : Manitoulin Island Largest island in a river : Bananal Island Largest island in fresh water : Marajó Largest uninhabited island : Devon Island Lowest island : Franchetti island in Lake Afrera, Ethiopia Island shared by largest number of countries : Borneo ( Brunei, Indonesia, Malaysia ) See also Desert island Inland island Island biogeography Island ecology Island country Island hopping List of ancient islands List of archipelagos List of artificial islands List of divided islands List of fictional islands List of island countries List of islands by area List of islands by body of water List of islands by continent List of islands by country List of islands by highest point List of islands by name List of islands by population List of islands by population density List of islands named after people Phantom island Private island Small Island Developing States Tidal island Islands portal Environment portal Ecology portal Geography portal Weather portal References Notes Jump up ^ `` Hawaii : Image of the Day ''. Retrieved January 6, 2015. Jump up ^ `` Webster 's Dictionary - Island ''. Jump up ^ `` Island ''. Dictionary.com. Retrieved March 5, 2007. Jump up ^ Ringe, Donald A. ( 2006 ). A Linguistic History of English : From Proto - Indo - European to Proto - Germanic. Oxford University Press. p. 109. ISBN 0 - 19 - 928413 - X. Jump up ^ Brown, Mike. How I Killed Pluto and Why It Had It Coming. New York : Random House Digital, 2010. ISBN 0 - 385 - 53108 - 7 Jump up ^ Royle, Stephen A. A Geography of Islands : Small Island Insularity. Psychology Press, 2001. pp. 7 -- 11 ISBN 1 - 85728 - 865 - 3 Jump up ^ `` Island ( geography ) ''. Encyclopædia Britannica. Retrieved 16 September 2014. Jump up ^ Lomolino, Mark V. ( editor ) ; ( et al. ) ( 2004 ) Foundations of Biogeography : Classic Papers with Commentaries. University of Chicago Press. p. 316. ISBN 0226492362 ^ Jump up to : Austrian Academy of Sciences. `` The Tropical Islands of the Indian and Pacific Oceans ''. doi : 10.1553 / 3 - 7001 - 2738 - 3. Missing or empty url = ( help ) Jump up ^ Arnberger, Hertha, Erik ( 2011 ). The Tropical Islands of the Indian and Pacific Oceans. Vienna : Austrian Academy of Sciences Press. ISBN 978 - 3700127383. Jump up ^ `` Building Artificial Islands That Rise With the Sea ''. Retrieved 2016 - 06 - 28. Jump up ^ `` What Makes an Island ? Land Reclamation and the South China Sea Arbitration Asia Maritime Transparency Initiative ''. 2015 - 07 - 15. Retrieved 2016 - 06 - 28. Jump up ^ `` Conception of development of the artificial lands of Vasilievsky island ''. Retrieved 2016 - 06 - 28. Jump up ^ United Nations Convention on the Law of the Sea, Article 13. Retrieved 25 August 2017. External links Wikimedia Commons has media related to : Island ( category ) Wikiquote has quotations related to : Islands Wikisource has the text of the 1911 Encyclopædia Britannica article Island. Definition of island from United Nations Convention on the Law of the Sea Listing of islands from United Nations Island Directory. Coastal geography Landforms Anchialine pool Archipelago Atoll Avulsion Ayre Barrier island Bay Baymouth bar Bight Bodden Brackish marsh Cape Channel Cliff Coast Coastal plain Coastal waterfall Continental margin Continental shelf Coral reef Cove Dune cliff - top Estuary Firth Fjard Fjord Freshwater marsh Fundus Gat Geo Gulf Gut Headland Inlet Intertidal wetland Island Islet Isthmus Lagoon Machair Marine terrace Mega delta Mouth bar Mudflat Natural arch Peninsula Reef Regressive delta Ria River delta Salt marsh Shoal Shore Skerry Sound Spit Stack Strait Strand plain Submarine canyon Tidal island Tidal marsh Tide pool Tied island Tombolo Windwatt Beaches Beach cusps Beach evolution Coastal morphodynamics Beach ridge Beachrock Pocket beach Raised beach Recession Shell beach Shingle beach Storm beach Wash margin Processes Blowhole Cliffed coast Coastal biogeomorphology Coastal erosion Concordant coastline Current Cuspate foreland Discordant coastline Emergent coastline Feeder bluff Fetch Flat coast Graded shoreline Headlands and bays Ingression coast Large - scale coastal behaviour Longshore drift Marine regression Marine transgression Raised shoreline Rip current Rocky shore Sea cave Sea foam Shoal Steep coast Submergent coastline Surf break Surf zone Surge channel Swash Undertow Volcanic arc Wave - cut platform Wave shoaling Wind wave Wrack zone Management Accretion Coastal management Integrated coastal zone management Submersion Related Bulkhead line Grain size boulder clay cobble granule pebble sand shingle silt Intertidal zone Littoral zone Physical oceanography Region of freshwater influence Commons GND : 4128227 - 9 NDL : 00570986 Retrieved from `` https://en.wikipedia.org/w/index.php?title=Island&oldid=806904623 '' Categories : Islands Coastal and oceanic landforms Fluvial landforms Oceanographical terminology Hidden categories : Pages using web citations with no URL Use mdy dates from May 2013 Wikipedia articles with GND identifiers Talk Contents About Wikipedia Wikimedia Commons Wikiquote Acèh Afrikaans Alemannisch Aragonés ܐܪܡܝܐ Armãneashti Asturianu Avañe'ẽ Azərbaycanca تۆرکجه বাংলা Bân - lâm - gú Башҡортса Беларуская Беларуская ( тарашкевіца ) ‎ भोजपुरी Bikol Central Български Boarisch Bosanski Brezhoneg Català Чӑвашла Cebuano Čeština ChiShona Cymraeg Dansk Deutsch Eesti Ελληνικά Emiliàn e rumagnòl Español Esperanto Euskara فارسی Fiji Hindi Føroyskt Français Frysk Gaeilge Gaelg Gàidhlig Galego 贛 語 한국어 Hawaiʻi Հայերեն हिन्दी Hornjoserbsce Hrvatski Ido Ilokano Bahasa Indonesia Interlingua Ирон Íslenska Italiano עברית Basa Jawa ಕನ್ನಡ Къарачай - малкъар ქართული Қазақша Kiswahili Коми Kreyòl ayisyen Kurdî Кыргызча Кырык мары Ladino Latina Latviešu Lëtzebuergesch Lietuvių Limburgs Lingála La. lojban. 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Question: what is the term used to describe an area of land completely surrounded by water
Answer: island or isle