polar regions; the pole
Refers to the Arctic and Antarctic regions, or the geographical poles themselves. Often used in scientific, geographical, or expedition contexts.
farthest land; ends of the earth
Figurative or literary use for a place that feels extremely remote or isolated, as if at the edge of the world. Less common than the literal polar sense.
Antarctica is one of the coldest polar regions on Earth.
He has extensive experience in polar exploration.
That small village felt like the ends of the earth.
expedition style; siege style
Compound of 極 (きょく, 'pole, extremity') and 地 (ち, 'land, region'). The meaning 'polar regions' is a straightforward extension of the kanji components.