Plastic Cross Stitch Canvas

What is the difference between Plastic Canvas Cross Stitch?
Cross stitch is normally on a canvas Challis and you count the holes and follow a table. Sometimes, the design is printed on the fabric and you cross stitch on the design of what is called cross stitch stamped. Plastic canvas you can always Cross-use item, but obviously it is a rigid surface and is used to manufacture various items such as boxes of tissues and pen.