Method overloading: Defining multiple methods with the same name but different parameters within the same class. Method overloading is a compile-time polymorphism. It can increase the readability of a program. Method overriding: Creating a method in a child class that has the same name, parameters, and return type as a method in the parent class. Method overriding is a run-time polymorphism. It's used to provide a specific implementation of a method that's already available from its parent or superclass.