Formatting 
<acronym>Not supported in HTML5. Defines an acronym
<abbr>Defines an abbreviation
<address>Defines contact information for the author/owner of a document/article
<b>Defines bold text
<bdi>NewIsolates a part of text that might be formatted in a different direction from other text outside it
<bdo>Overrides the current text direction
<big>Not supported in HTML5. Defines big text
<blockquote>Defines a section that is quoted from another source
<center>Not supported in HTML5. Deprecated in HTML 4.01. Defines centered text
<cite>Defines the title of a work
<code>Defines a piece of computer code
<del>Defines text that has been deleted from a document
<dfn>Defines a definition term
<em>Defines emphasized text 
<font>Not supported in HTML5. Deprecated in HTML 4.01. Defines font, color, and size for text
<i>Defines a part of text in an alternate voice or mood
<ins>Defines a text that has been inserted into a document
<kbd>Defines keyboard input
<mark>NewDefines marked/highlighted text
<meter>NewDefines a scalar measurement within a known range (a gauge)
<pre>Defines preformatted text
<progress>NewRepresents the progress of a task
<q>Defines a short quotation
<rp>NewDefines what to show in browsers that do not support ruby annotations
<rt>NewDefines an explanation/pronunciation of characters (for East Asian typography)
<ruby>NewDefines a ruby annotation (for East Asian typography)
<s>Defines text that is no longer correct
<samp>Defines sample output from a computer program
<small>Defines smaller text
<strike>Not supported in HTML5. Deprecated in HTML 4.01. Defines strikethrough text
<strong>Defines important text
<sub>Defines subscripted text
<sup>Defines superscripted text
<time>NewDefines a date/time
<tt>Not supported in HTML5. Defines teletype text
<u>Defines text that should be stylistically different from normal text
<var>Defines a variable
<wbr>NewDefines a possible line-break
Forms 
<form>Defines an HTML form for user input
<input>Defines an input control
<textarea>Defines a multiline input control (text area)
<button>Defines a clickable button
<select>Defines a drop-down list
<optgroup>Defines a group of related options in a drop-down list
<option>Defines an option in a drop-down list
<label>Defines a label for an <input> element
<fieldset>Groups related elements in a form
<legend>Defines a caption for a <fieldset>, < figure>, or <details> element
<datalist>NewSpecifies a list of pre-defined options for input controls
<keygen>NewDefines a key-pair generator field (for forms)
<output>NewDefines the result of a calculation


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