Confusion between or tags. Which to use?

Question

Despite reading pages upon pages about the

and

tags I really don\'t understand how to apply them to my site.

I

Answer 1

In the HTML5 standard, the <"article"> element defines a complete, self-contained block of related elements.

The <"section"> element is defined as a block of related elements.

Can we use the definitions to decide how to nest elements? No, we cannot!

On the Internet, you will find HTML pages with <"section"> elements containing <"article"> elements, and <"article"> elements containing <"sections"> elements.

You will also find pages with <"section"> elements containing

elements, and

elements containing <"article"> elements.

Right From : http://www.w3schools.com/html/html5_semantic_elements.asp