Field ices, also known as ice floes, are large chunks of floating ice that can be found in oceans and other bodies of water. These field ices can be dangerous for boats and ships, as they can cause collisions or even damage the vessels. Other synonyms for field ices include icebergs, glaciers, pack ice, and sea ice. Icebergs are large chunks of ice that have broken off from glaciers and float in the ocean. Glaciers are large masses of ice that form when snow accumulates over time. Pack ice refers to smaller pieces of floating ice, whereas sea ice is the general term for any ice that forms on the surface of the ocean.