Answer 1

Here's an example:

public void method(int x){
x = 5;
}

Overriden:

public void method(int x){
x = 90;
// when you override a method, you write the same method but with different code inside it. In the first method we assign x = 5, in the Overriden method we assign x = 90...different code
}

Overloaded:

public void method(int x, int y){

//we only change the number of parameters of the method
//typical overloaded methods would be constructors for example
}

Greetings :D