Difference between toArray and makeArray in jquery

I'm trying to convert the DOM element as an collections of object. But I don't know what the main difference between toArray() and makeArray()

HTML

<div id="firstdiv">
   <div>foo1</div>
   <div>foo2</div>
   <div>foo3</div>
</div>

I used the following code to convert the nodes to an array:

JQUERY

console.log($("#firstdiv > div").toArray());
console.log($.makeArray($("#firstdiv").html()));

I can't quite understand the difference between them, and I've searched for this question but not found any clear explanation.

Thanks in advance.