Why does an ice-hockey puck have less friction than a ball rolling on the ground?

An Ice Hockey puck has less friction than a ball rolling on the ground because the puck's smooth, flat surface makes contact with the ice, reducing friction. In contrast, a ball rolling on the ground has more points of contact with the rough surface, leading to increased friction that slows it down. Additionally, the presence of air between the ball and the ground can also contribute to more friction.