Island
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, such as the Philippines.
Pacific Islands
Many islands located within the boundaries of the Pacific Ocean are not considered part of Oceania. These islands include the Galápagos Islands of Ecuador; the Aleutian Islands of Alaska, United States; Vancouver Island in Canada; the Russian islands of Sakhalin and Kuril Islands; the island nation of Taiwan and other islands of the Republic of China; the Philippines; islands in the South China Sea, which includes the disputed South China Sea Islands; most of the islands of Indonesia; and the island nation of Japan, which comprises the Japanese Archipelago.