overloading means when you define more than one function 
with the same name but different with its signature.


over ridding means give the modified defination of the 
inherited functions or methods.

Overloading is nothing but compile time allocation where we 
will come to know which method will be called. In this 
method we can overload either a method or even operators 
too.

Overridding is nothing but run time allocation. We being 
programmers can let the program to deside which method 
should be called during the execution.  During comp time, 
we will never come to know which object will call which 
method. This can be achived by using VIRTUAL keyword.

Overloading: Same function or operator responds differently 
on different types on inputs. This is done by defining a 
function (including operator fn() definition) with the same 
name but different argument list.

Overriding: Redefining any base class function in a 
derieved class to work differently than what is defined in 
the base class. So, now the same function called with same 
argument list will behave differently when called on the 
objects of base and derieved class.

Important: Which instance of function to bind with the 
object depends on the type of object on which the function 
is called and is decided on compile time. This is also 
called early binding or compile time polymorphism.

over loading is nothing but

overloading means one function name havimg different 
arguements.
but overriding means the base as well as the derived class 
havimg same function name

Overloading means when we write diffrent fun. With the Same name & with diffrent singnature then it is called  overloading .     Overiding means both base & derived class has same name.

Overloading:-Writing Two or three methods with same name 
but different parameters in same class,it is called 
methodOverloading.

Overriding:-writing same methodname and parameters in 
subclass and superclass with same return  type,it is called 
methodoverriding.

Difference

Method OverLoading
1. Same method name with different number of argument
2. Number of argument with different datatype
3. Each method may returns different type of value
4. All overloaded methods founds to be in one class.

Method OverRiding
1. Same method name with same number of argument
2. Number of argument with same datatype
3. Each method must returns same type of value
4. Each overrided method of base class founds in respective 
derived class.

over loading : diff functns hvng same name are invoked
during the program whnever required by the programmer.

over ridding : gvs modified defination 2 d functns

Method Overloading is the method name looks similar but 
return type and method arguement (inside parameter) differs.

Method Overiding is that the method name, arguements and 
return type seems similar on both base and derived class. 
(Sometimes we will add the additional code to the derived 
class method also).