Nominal data includes names or characteristics that contain two or more categories, and the categories have no inherent ordering. In other words, these types of data don't have any natural ranking or order. An ordinal data type is similar to a nominal one, but the distinction between the two is an obvious ordering in the data. Overall, ordinal data have some order, but nominal data do not. All ranking data, such as the Likert scales, the Bristol stool scales, and any other scales rated between 0 and 10, can be expressed using ordinal data.