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.
Calluses are rarely painful but corns are. There however is a similarity in the composition of tissue making up the two. This being the case, it is inevitable to wonder what causes corns and calluses. The major cause of corns and calluses is continuous pressure and force being subjected on an area, as a result of which there is hardening of dead skin.