overrde vs overload java

1class Dog{
2    public void bark(){
3        System.out.println("woof ");
4    }
5}
6class Hound extends Dog{
7    public void sniff(){
8        System.out.println("sniff ");
9    }
10 
11    public void bark(){
12        System.out.println("bowl");
13    }
14}
15 
16public class OverridingTest{
17    public static void main(String [] args){
18        Dog dog = new Hound();
19        dog.bark();
20    }
21}