The term 'ARCTIC OR ANTARCTIC' can be summarized by two crossword solutions: POLAR (5 letters) and OCEAN (5 letters). The Arctic and Antarctic are two of the Earth's most extreme regions, located at the top and bottom of the planet respectively. They are both characterized by cold temperatures, long winters, and a lack of vegetation. The Arctic is an OCEAN surrounded by land, while the Antarctic is a continent surrounded by OCEAN. Both regions are home to unique wildlife and have been the subject of scientific exploration for centuries.