HTML5 structural element <nav> elements use to build links within a page or a site. Not every collection of links is a <nav>. For example, the sponsor's link list and search results page are not, because they are the main content of the current page.
<nav>
<p><a href=/>Home</a></p>
<p><a href=/about>About</a></p>
</nav>
The <nav> element is a wrapper that does not replace <ol> or <ul>, but will surround it.
<nav>
<h2>Main navigation</h2>
<ul>
<li><a href=/about>About me</a></li>
<li><a href=/news>News</a></li>
</ul>
</nav>