What category of variables includes nominal or ordinal variables?

Categorical variables include nominal and ordinal variables. Nominal variables represent categories without any inherent order or ranking, while ordinal variables represent categories that have a natural order or ranking. These categories cannot be meaningfully measured in terms of magnitude or distance. On the other hand, numerical variables include interval and ratio variables that are measurable in terms of magnitude or distance between values. Interval variables have equal intervals between values, but do not have a true zero point, while ratio variables have both equal intervals and a true zero point.