What is the difference between ground red pepper and cayenne, and how do their flavors and heat levels compare when used in cooking?

Ground red pepper and cayenne are both made from dried and ground chili peppers, but they come from different varieties of peppers. Cayenne is typically hotter and spicier than ground red pepper, which is milder. In cooking, cayenne adds a more intense heat and a distinct flavor, while ground red pepper provides a subtle heat with a slightly sweet and earthy taste. The choice between the two depends on the desired level of heat and flavor in a dish.