Nested Role: This role is higher than the parent role which means that the parent role can't access the said role. However, higher level roles can access it.<br><br>Parallel Role: This role is equal to the parent role. It can access to lower level roles of the parent role but it can't access the parent role, same as the parent role can't access to the created role since they are equal. Higher level roles can't access the said role also.<br>