Difference between break and return

<script>    var a = 0;    var b = 0;    var foo = ()=>    {        for(let i=0;i<5;i++)        {               a+=1;            if(i===3)            {                break;            }        }        a+=1;    }    var bar = ()=>    {        for(let i=0;i<5;i++)        {               b+=1;            if(i===3)            {                return;            }        }        b+=1;    }    foo();    bar();    console.log("a:"+a+" "+"b:"+b);    //a:5 b:4</script>

1、Break jumps out of the closest loop.
2、Return jumps out of the function.