earthquake-n; 2 Senses

Sense Number 1: a temblor, significant tectonic activity

Commentary: EARTHQUAKE[+movement][+large][+rapid][+physical]

They measured the earthquake at 7.8 on the Richter scale.
These cracks in the ceiling are from the last earthquake.
Philip is afraid of visiting California because it has earthquakes.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: a social upheaval or disturbance

Commentary: EARTHQUAKE[+movement][+large][+rapid][+social]

This new band has caused a real earthquake in the New York music scene.
One earthquake followed another last week in Washington with this second scandal.

WordNet 3.0 Sense Numbers: 2