How will you explain out-of-scope, scope creep and beyond scope in freelancing?

[Btaliat]

The three may sound similarities but they are not. Out of scope is adding additional information that is not originally in the scope of the project. When we refer to scope creep, this will happen when clients intentionally expanding additional information to the projects as against the scope of the project. While beyond scope is additional information that is not in the scope but is considered vital to the success of the project. What else can you add?