Football differs from volleyball in that there are different rules. You can't play volleyball with your feet, and football with your hands. Different balls. Different sizes of playing fields. Different number of players. Different play times. In football, you need to run across the field, and in volleyball, stand in positions. In football, you need to run after the ball, and in volleyball you need to hit with your hands and jump.
Football differs from volleyball in that there are different rules. You can't play volleyball with your feet, and football with your hands. Different balls. Different sizes of playing fields. Different number of players. Different play times. In football, you need to run across the field, and in volleyball, stand in positions. In football, you need to run after the ball, and in volleyball you need to hit with your hands and jump.