An eraser is an object that is most often used to remove marks from paper, mostly caused by a pencil. The surface of an eraser, which is made of rubber or a similar material is both soft and sticky. When it is dragged across pencil marks, the lead or graphite sticks to it. Not all erasers are used for erasing pencil marks; but some erase crayon marks. But not all erasers can erase crayon marks.
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