Ice core is a term used to describe a cylindrical section of ice that has been collected from a glacier or an ice sheet. It is a valuable source of information for scientists studying the Earth's climate and history. However, there are several other terms that can be used in place of "ice core". For example, an ice drill core describes the same cylindrical section of ice collected using a drill. A glacier ice sample or a glacial ice core can also be used to describe the same thing. Lastly, scientists sometimes use the term polar ice core or Antarctic ice core to refer to ice cores collected from the polar regions.