The main difference between an oblong and an oval tablecloth is their shape.
An oblong tablecloth—also known as a rectangular tablecloth—is identifiable by its long, straight sides and sharp corners, designed to provide a polished drape that hangs evenly over the table’s edges. Oblong tablecloths are generally used to cover rectangular or square tables.
An oval tablecloth has a curved, elongated shape that resembles an oval or racetrack. Oval tablecloths are designed to fit oval-shaped or round tables. They deliver a soft, elegant drape that complements the rounded edges of curved-perimeter tables.