The `Circle` class is a subclass or child class of the `Shape` class. It inherits all properties and behaviors defined in the `Shape` class but can also have additional specialized features specific to circles.
Related terms
Subclass/Child Class/Derived Class: A class that inherits properties and methods from another existing class (superclass).
Constructor Chaining: The process by which one constructor calls another constructor within the same class or superclass hierarchy.
Method Overriding (mentioned earlier): The ability of a subclass to provide its own implementation of a method defined in its superclass.