Antarctic regionAn area within the Antarctic Circle that includes the fifth largest continent and its surrounding waters, consisting mostly of thick ice shelves
Arctic regionThe northernmost area of the earth, centered on the North Pole, that includes the Arctic Ocean, the northern reaches of Canada, Alaska, Russia, Norway and most of Greenland, Iceland and Svalbard
economic regionA district or an administrative division of a city or territory that is designed according to some material, distributive or productive criteria