Which type of storm only forms over large bodies of warm water?

The correct answer is known as "a hurricane or a tropical cyclone".

A tropical cyclone is described as an unexpectedly rotating typhoon system characterized through a low-strain center, a closed low-level atmospheric flow, sturdy winds, and a spiral arrangement of thunderstorms that produce heavy rain. In relation to its location and power, a tropical cyclone is referred to many distinct names, such as the name hurricane or typhoon.