Marsquake
A marsquake is a quake which, much like an earthquake, would be a shaking of the surface or interior of the planet Mars as a result of the sudden release of energy in the planet's interior, such as the result of plate tectonics, which most quakes on Earth originate from, or possibly from hotspots such as Olympus Mons or the Tharsis Montes.
NASA's InSight lander is likely retiring later this year. But thanks to its marsquake-measuring seismometer, the lander has already revealed a great deal about the internal structure of the Red Planet. Here's the basics of what different seismic waves (p-, s-, Rayleigh, and Love waves) can teach us.