Tsunami is a wave but its a bigger one that damage buildings and thing
A tsunami can work by a volcano eruption underwater making the water go up making a bigger wave that can be called a tsunami and one the biggest tsunamis in history was in ”Lituya bay ,Alaska and it was 1,720 feet tall .
A way you know a tsunami is coming is when there is a warning sound and when the water goes into the sea and comes back to the beach as a big wave – tsunami