Cape vs. Gulf: Landform vs. Waterbody – Definitions and Differences

Cape: A headland or promontory of land projecting into a water body. Formed by erosion (wave-cut) or deposition (spit, tombolo). Serves as navigational landmark (e.g., Cape Horn, Cape Cod).

Gulf: A large body of water partially enclosed by land. Formed by tectonic subsidence, glacial carving, or river valley flooding. Often a major trade route and population center (e.g., Gulf of Mexico, Persian Gulf).

Fundamentally: a cape is land into water; a gulf is water into land.