Final answer:
Peaches are primarily classified as freestone or clingstone, meaning the flesh adheres to the pit. Freestone peaches have a pit that easily separates from the flesh, while clingstone peaches have a flesh that tightly clings to the pit.
Step-by-step explanation:
Peaches are primarily classified as freestone or clingstone, meaning the flesh adheres to the pit. The opposite type to freestone is clingstone, where the flesh sticks to the pit. Freestone peaches have a pit that easily separates from the flesh, making them ideal for eating fresh or for use in recipes. Clingstone peaches, on the other hand, have a flesh that tightly clings to the pit, making them more suitable for canning or cooking.