HTML5 Tags: An Overview

Tag	Description
<article>	Defines an article
<aside>	Defines content aside from the page content
<audio>	Defines sound content
<canvas>	Defines graphics
<command>	Defines a command button
<datalist>	Defines a dropdown list
<details>	Defines details of an element
<dialog>	Defines a dialog (conversation)
<figure>	Defines a group of media content, and their caption
<footer>	Defines a footer for a section or page
<header>	Defines a header for a section or page
<hgroup>	Defines information about a section in a document
<keygen>	Defines a generated key in a form
<mark>	Defines marked text
<meter>	Defines measurement within a predefined range
<nav>	Defines navigation links
<output>	Defines some types of output
<progress>	Defines progress of a task of any kind
<rp>	Used in ruby annotations to define what to show browsers that to not support the ruby element.
<rt>	Defines explanation to ruby annotations.
<ruby>	Defines ruby annotations.
<section>	Defines a section
<source>	Defines media resources
<time>	Defines a date/time
<video>	Defines a video
<acronym>	Not supported in HTML 5.
<applet>	Not supported in HTML 5.
<basefont>	Not supported in HTML 5.
<big>	Not supported in HTML 5.
<center>	Not supported in HTML 5.
<dir>	Not supported in HTML 5.
<font>	Not supported in HTML 5.
<frame>	Not supported in HTML 5.
<frameset>	Not supported in HTML 5.
<noframes>	Not supported in HTML 5.
<s>	Not supported in HTML 5.
<strike>	Not supported in HTML 5.
<tt>	Not supported in HTML 5.
<u>	Not supported in HTML 5.
<xmp>	Not supported in HTML 5.

source: w3schools.com