Isthmus vs. Peninsula

Isthmusnoun

A narrow strip of land, bordered on both sides by water, and connecting two larger landmasses.

Isthmusnoun

(anatomy) Any such narrow part connecting two larger structures.

Isthmusnoun

(graph theory) An edge in a graph whose deletion increases the number of connected components of the graph.

Isthmusnoun

A neck or narrow slip of land by which two continents are connected, or by which a peninsula is united to the mainland; as, the Isthmus of Panama; the Isthmus of Suez, etc.

Isthmusnoun

a relatively narrow strip of land (with water on both sides) connecting two larger land areas

Isthmusnoun

a narrow band of tissue connecting two larger parts of an anatomical structure

Isthmus

An isthmus ( or ; plural: isthmuses or isthmi; from Ancient Greek: ἰσθμός, romanized: isthmós, lit. 'neck') is a narrow piece of land connecting two larger areas across an expanse of water by which they are otherwise separated. A tombolo is an isthmus that consists of a spit or bar, and a strait is the sea counterpart of an isthmus.

Peninsulanoun

(geography) A piece of land projecting into water from a larger land mass.

Peninsulanoun

A portion of land nearly surrounded by water, and connected with a larger body by a neck, or isthmus.

Peninsulanoun

a large mass of land projecting into a body of water

Peninsulanoun

a piece of land almost surrounded by water or projecting out into a body of water.

Peninsula

A peninsula (Latin: paeninsula from paene 'almost' and insula 'island') is a landform surrounded by water on most of its border while being connected to a mainland from which it extends. The surrounding water is usually understood to be continuous, though not necessarily named as a single body of water.