Wave interaction is a research area that focuses on the study of how different types of waves interact with each other when they cross paths or overlap. This can include studying phenomena such as interference patterns, superposition of waves, and wave scattering. Understanding wave interaction is crucial in various fields such as physics, engineering, and oceanography, as it can help in predicting and manipulating the behavior of waves in different environments. The study of wave interaction can also provide insights into wave properties and their impact on the surrounding environment.