Iceberg

"Iceberg" can refer to several different concepts depending on the context: 1. **Natural Phenomenon**: An iceberg is a large piece of freshwater ice that has broken off from a glacier or shelf ice and floats in open water. Icebergs are mostly submerged, with about 90% of their mass underwater, making them dangerous for ships. They are commonly found in polar regions, especially in the North Atlantic and Antarctic waters.