Overloading and Overriding are two parts of Polymorphism.Basically,Polymorphism means same name but different forms. Overloading - 1-In overloading methods name are same but. they have different number of parameters. but if they have same number of parameters then types of parameters must. be different. 2- Overloading always take place in one class. 3- Return type of methods are not consider in overloading. Overriding - 1- In method Overriding methods name and number of parameters are also same. We. can override method of parent class in. child class. 2-Overriding take place in two classes having. parent child relation. 3- Return type of method also must be same in Overriding.