To which category of data does the Enum type belong?

The Enum type in iOS (Swift) belongs to the category of enumerated types (enumerations). It is a user-defined type that specifies a set of related values under a single name.

Enums allow working with a limited set of options, making the code more readable and safe.

Example:

enum Direction {
    case north
    case south
    case east
    case west
}

let dir: Direction = .north

Thus, an Enum is a data type that represents a discrete set of values, often used for modeling states or options.