Powerboat is a term used to describe a type of watercraft that is powered by an engine. Synonyms for powerboat include motorboat, speedboat, motor cruiser, runabout, and ski boat. A motorboat usually refers to a smaller powerboat, while a motor cruiser is a larger yacht-style vessel. A runabout is a smaller, open-decked boat designed for short trips and leisure activities. A ski boat is a specialized type of motorboat used for water sports like water skiing and wakeboarding. Overall, powerboats are a popular way to enjoy the water for a wide range of activities, and there are many different styles and types to choose from.