Chainsaws are versatile tools used for cutting down trees, pruning, bucking branches, and cutting firewood. They have also been developed for other uses like cutting concrete, stone, and brick, as well as for wood carving and ice sculpting. A chainsaw is a portable mechanical saw that is commonly powered by a two-stroke gasoline engine. There are four main parts: the engine, drive mechanism, guide bar with chain, and cutting chain with teeth. Safety features have improved over time, but chainsaws still require careful and proper use while wearing protective gear to prevent severe injury.