HTML vs XML

What is HTML and XML?

HTML
HTML is short for HyperText Markup Language and is the basis for website building. It defines the structure of a website. It is often assisted by technologies such as CSS and JavaScript.

Here is an example of HTML

<!DOCTYPE html>
<html>
<head>
<title>HTML vs XML</title>
</head>
<body>

<h1>My First Heading</h1>
<p>My first paragraph.</p>

</body>
</html>

HTML was Developed by: WHATWG and W3C (World Wide Web Consortium).

XML
XML is short for Extensible Markup Language and is a file format for storing, transmitting, and reconstructing arbitrary data. XML is a markup language much like HTML. It was designed to store and transport data.

Here is an example of XML

<note>
  <to>HTML</to>
  <from>XML</from>
  <heading>Reminder</heading>
  <body>Don't forget me this weekend!</body>
</note>

XML was Developed by: W3C (World Wide Web Consortium).

So what's the Difference?

XML was designed to carry data - with a focus on what data is, while HTML was designed to display data - with a focus on how data looks.
HTML works with predefined tags like <p>, <h1>, <table>, etc. With XML, the author must define both the tags and the document structure.