What waves do you know how they are formed?

The waves are divided into several groups by their origin. They can form due to the gravity of the moon during high tide. Such waves rise to land several times during the day, and then retreat. Also, waves are formed under the influence of the wind, and the stronger the wind, the more powerful the waves are. Due to underwater earthquakes or earthquakes close to the coast, powerful waves are formed, which are called tsunamis. This type of wave poses a huge threat to coastal countries and cities.