The term 'made smooth' can be achieved through a variety of processes. Ironing, planing, sanding, evening and easing are all methods that can be used to make something smooth. Ironing is the process of using a heated metal tool to press fabric and remove wrinkles. Planing is the process of using a tool to shave off thin layers of wood. Sanding is the process of using abrasive material to remove small amounts of material from a surface. EVENED is the process of making something level or even. Lastly, easing is the process of making something less severe or difficult.