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waterfall
A waterfall is usually a geological formation resulting from water, often in the form of a stream, flowing over an erosion-resistant rock formation that forms a suden break in elevation or nickpoint.
Trivia about waterfall
Wisconsin honeymooners may visit Big Manitou, at 165 feet one of the highest of these east of the Rockies
A small one is a cascade; a large one, a cataract
A cascade is a small one of these & a ribbon is a tall narrow one
A giant ocean cataract, a type of this under the Denmark Strait, carries 5 million cubic meters of water per second
The natural feature called Salto Angel in Spanish is the world's highest uninterrupted one of these