* Seismology: The study of earthquakes and the structure of the Earth's interior.
* Seismologist: A scientist who studies earthquakes.
* Seismograph: An instrument that detects and records earthquakes.
* Seismogram: The record produced by a seismograph.
* Seismometer: A device that measures the ground motion caused by an earthquake.
* Seismic: Relating to or caused by earthquakes.
* Seismicity: The frequency, intensity, and distribution of earthquakes in a region.
* Tsunami: A large wave caused by an earthquake or other underwater disturbance.
* Seismotectonics: The study of the relationship between earthquakes and the Earth's tectonic plates.
* Seismically active: A region prone to earthquakes.
There are many more words that use the root "seismo", but these are some of the most common and useful ones.