Volcano
Context
A mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust
Explanation
A geological formation arising from the earth's crust due to tectonic activities, capable of erupting with lava and ash
Applications
The volcano erupted spectacularly last year.
They observed the dormant volcano from a safe distance.
Lava flowed from the active volcano.