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.
What is a callus? Corns and calluses are hard, thickened areas of skin that form as a consequence of rubbing, friction, or pressure on the skin. Corns and calluses form on the feet and can make walking painful. Although corns and calluses are often talked about together, they are separate conditions. Corns generally occur on the tops and sides of the toes. A hard corn is a small patch of thickened, dead skin with a small plug of skin in the centre.