The Geographic South Pole (90°S) is a point on the Antarctic Ice Sheet, not on a continent's landmass. The ice there is ~2,700 m (9,000 ft) thick, resting on bedrock near sea level. The pole itself moves ~10 m/year due to ice flow.
Antarctica is the continent surrounding the South Pole. Key facts:
The pole is an ice-surface point; the continent is the geological landmass + ice sheet. Treaties (Antarctic Treaty System) govern the continent, not the pole itself. Scientific stations (Amundsen-Scott at the pole; McMurdo, Vostok, etc. on the continent) conduct unique research in glaciology, astronomy, atmospheric science, and biology.