Graduation tassels are usually worn on a graduation cap during a high-school or university commencement ceremony. Each graduation tassel also can include a small metallic graduation year charm indicating the year, including options for past years.
A corn is usually very painful.  Corns can develop along the tops and sides of the joints of the toe especially along the edge of the fifth toe. They can develop in between toes when one of the bones of the toe rubs on the bone of the toe next to it and on the sole of the foot, usually near the ball of the foot. A corn feels like walking on a little stone.
A callus refers to a more diffuse, flattened area of thick skin, while a corn is a thick, localized area that usually has a popular, conical or circular shape. Corns, also known as helomas or clavi, sometimes have a dry, waxy, or translucent appearance. A callus is also known as a tyloma. Corns and calluses occur on parts of the feet and sometimes the fingers. Corns are often painful, even when they are small. Common locations for corns are. 1  on the bottom of the foot (sole), over the metatarsal arch (the ball of the foot);