Radial arm saw, as the name gives away, has its blade head attached to a hanging arm. In simple terms it is a circular saw that can slide along a pivoted arm. 

It has a wide variety of uses. You can use it for timber framing, building furniture, fine woodworking, wood cutting for DIY projects and home improvement work. While it may not be the pound for pound most versatile power tool around, it’s definitely up there in terms of versatility because of the sheer number of cuts that the radial saw can make.