Sailing boats cover any sail-powered craft, some won't have an engine at all, while others will have a powerful engine and the sails will just be an afterthought. They range from tiny sail-powered dinghies designed to be sailed by one person, to huge sailing mega-yachts powered by a full crew. Some are designed for speed, while others are designed with comfort as the top priority - they really do come in all shapes and sizes.
If you are looking to buy a sailing boat it pays to familiarise yourself with the popular brands, the common rig and sail configurations and keel shapes so you can narrow down the craft that will be best suited to your needs. Find out more about sailing boats and their key characteristics here.