Pilates equipment and yoga props can both support movement, but they usually serve different purposes. Pilates equipment often adds guided resistance, range control, or exercise structure. Yoga props usually make poses more accessible, supported, comfortable, or aligned.
The difference matters because a ring, reformer, strap, or Pilates apparatus is often used to shape an exercise, while yoga blocks, bolsters, blankets, and straps are often used to support a position. The tools can overlap, but they are not automatically interchangeable.