Cay vs. Islet

Caynoun

A small, low island largely made of sand or coral.

Caynoun

See Key, a ledge.

Caynoun

a coral reef off the southern coast of Florida

Cay

A cay ( or ), also spelled caye or key, is a small, low-elevation, sandy island on the surface of a coral reef. Cays occur in tropical environments throughout the Pacific, Atlantic and Indian Oceans (including in the Caribbean and on the Great Barrier Reef and Belize Barrier Reef).

Isletnoun

A small island

Isletnoun

(biology) An isolated piece of tissue that has a specific function

Isletnoun

A little island.

Isletnoun

a small island

Islet

An islet is a very small island. Most definitions are not precise, but some suggest that an islet has little or no vegetation, and cannot support human habitation.