a flat, rectangular surface four sides with a border, often made of wood, plastic, or metal a material covering the surface, such as paper, chalk, or a whiteboard a writing implement, such as a marker, pen, or chalk a lid or cover to protect the surface when not in use
board which is a flat, rectangular surface board which has four sides with a border, often made of wood, plastic, or metal board which is a material covering the surface, such as paper, chalk, or a whiteboard board which is a writing implement, such as a marker, pen, or chalk board which is a lid or cover to protect the surface when not in use