Earth's crust; crust
Geological term for the outermost solid layer of the Earth. Common in scientific and news contexts.
Earthquakes are caused by movements of the Earth's crust.
The thickness of the Earth's crust varies from place to place.
After the massive earthquake, the Earth's crust shifted significantly.
Beneath the Earth's crust lies the mantle.
地殻 (also read ちかく) means 'the earth's crust,' a completely unrelated geological term that only sounds identical to 知覚 (perception).
Compound of 地 (earth, ground) and 殻 (shell, husk), literally 'earth shell'. A modern geological term.