Question

what is sunami and their types ​

Answer 1

Tsunami waves are very different from tidal waves. A tidal wave is by definition a wave caused by ocean tides, whereas a tsunami is almost always caused by an earthquake under water.

Tsunami waves are also very different from normal wind-generated waves, which many of us may have observed on a local lake or at a coastal beach. Observers of a tsunami will understand these waves are more like a fast moving tide crashing into the shoreline.