Another name for tsunami is tidal wave. They are both huge waves caused by earthquakes. Also, both their sizes depend on where the earthquake's epicenter and focus is. So, they are exactly the same thing.
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Another name for a tidal wave is a tsunami. Tsunamis are large ocean waves caused by underwater earthquakes or volcanic eruptions.
A tsunami, like the category you posted it in?
Tanganyika Tidal Wave was created in 1989.
A tsunami is also known as a 'tidal wave', which used to be the more common term. These days, 'tsunami' seems to be the more commonly used name, at least in the Pacific rim countries where English or Japanese is spoken.
Tsunami.