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.
List of peninsulas
A peninsula ( from "paene" "almost" and "insula" "island") is a piece of land that is bordered by water on three sides but connected to mainland. The surrounding water is usually understood to be continuous, though not necessarily named as such. A peninsula can also be a headland, cape, island promontory, bill, point,
or spit. A point is generally considered a tapering piece of land projecting into a body of water that is less prominent than a cape. In English, the plural of peninsula is "peninsulas" or, less commonly, "peninsulae". A river which courses through a very tight meander is also sometimes said to form a "peninsula" within the (almost closed) loop of water.