<!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <title>html</title>
</head>
<body>
<a href="./html.html">link</a>
<p>paragraph</p>
<pre>
preformatted text
&amp; ampersand
&amp; at-sign
 &lt; less than
&gt; greater than
&eacute; latin small letter e with acute
</pre>
 <h1>1st Header</h1>
 <h2>2nd Header</h2>
 <h3>3rd Header</h3>
 <ul>
  <li>ordered list item
 </ul>
 <ol>
  <li>unordered list item
 </ol>
 <table>
  <tr>
   <th>1
   <th>2
  </tr>
  <tr>
   <td>(1,1)
   <td>(2,1)
  </tr>
  <tr>
   <td>(1,2)
   <td>(2,2)
  </tr>
 </table>
</body>
</html>

Noun             Definition
element          matching pair of opening and closing tag together with their 
contained content
tag              <x>|</x>
opening tag      <x>
closing tag      </x>
attribute        <tag attribute-name = attribute-value>
attribute name
attribute value

the name of an element is used in the tags that delimitate it

Tag  Definition
body


markup
structural markup
semantic markup

headings
paragraphs
bold
italic
line break
horizontal rule