This occurs when rocks rub against each other becoming less jagged and more rounded?

This process is known as abrasion, which commonly occurs in natural environments such as rivers, beaches, and deserts. As rocks collide and scrape against one another, their edges wear down, leading to a smoother, more rounded appearance. Abrasion is a significant aspect of weathering and erosion, contributing to the shaping of landscapes over time. It can also be seen in man-made environments, such as in rock tumblers used for polishing stones.