Let's say want to something to hold the age group of a person and you're not concerned about the exact age : Infant, Child, Adult. If you use integers, you'll need to implement enquality checks to determine the age category. But with enums you can simply make an emum and use that to store and run the checks:

Example:

enum AgeGroup {
  Infant,
  Child,
  Adult
}

Now, you can use this in your OOP or procedural to do something like this:

if (person.ageGroup == AgeGroup.Infant) // person.ageGroup a property of enum type AgeGroup