Method overloading c#.net

I am confused if these 2 method are overloadable or not....

public void show(ref int x)

public void show(out int x)

Give me a suitable reason please

The method can be overloaded because you can overload a method when for some reason you want certain methods which are taking different parameters but they are performing similar functions. Here i would like to know for what purpose have you used 'ref' and 'out'.