Does the rougher the sand paper the higher the grit?

No, the roughness of sandpaper is inversely related to its grit number. A lower grit number, such as 60 or 80, indicates a coarser, rougher sandpaper, while a higher grit number, like 120 or 220, signifies a finer, smoother texture. Thus, higher grit sandpaper is less rough and used for finishing surfaces, whereas lower grit is used for initial material removal.