Nonlinear waves refer to waves that do not obey a linear relationship between their amplitude and the driving force. Instead, they exhibit complex and often unpredictable behavior, such as wave breaking, solitons, and chaos. Nonlinear waves are studied in various fields including physics, mathematics, engineering, and biology, and have numerous applications in areas such as oceanography, meteorology, and materials science. Research in nonlinear waves aims to better understand the underlying physics, develop mathematical models to describe their behavior, and explore practical applications of these phenomena.