noun
Refers specifically to the geographic South Pole, the southernmost point on Earth.
南極点は南極大陸の内陸にある。
The South Pole is located inland on the Antarctic continent.
noun
Antarctica; the Antarctic
Refers to the Antarctic region or continent as a whole. Often used in compounds like 南極圏 (Antarctic Circle) and 南極大陸 (Antarctic continent).
南極にはペンギンがたくさんいる。
There are many penguins in Antarctica.