What is the difference between tsunamis and seiche?

Answer 1

Tsunami (soo-NAH-mee): a Japanese word that means harbor wave; a sea wave of local or distant origin that results from large-scale seafloor displacements associated with large earthquakes, major submarine slides, or exploding volcanic islands. Typically generated by seismic or volcanic activity or by underwater landslides, a tsunami consists of a series of high-energy waves that radiate outward like pond ripples from the area in which the generating event occurred.

And A

Seiche (saysh): a series of standing waves (sloshing action) of an enclosed body or partially enclosed body of water caused by earthquake shaking. Seiche action can affect harbors, bays, lakes, rivers, and canals.

Answer 2

Tsunamis are large oceanic waves caused by underwater earthquakes, volcanic eruptions, or landslides. They can travel across the ocean and cause widespread destruction when they reach the coast. Seiches, on the other hand, are standing waves that occur in partially or fully enclosed bodies of water, like lakes or harbors, typically due to atmospheric pressure changes or wind. Unlike tsunamis, seiches can move back and forth but do not travel long distances or have the same destructive force.