a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapour, and gas are or have been erupted from the earth's
Volcano
a sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust or volcanic action.
Earthquake
A violently rotating column of air touching the ground, usually attached to the base of a thunderstorm.
Tornado