HTML (Hypertext Markup Language) is the standard language used for creating web pages, while HTML5 is the latest version of HTML. HTML5 includes new features such as semantic elements, audio and video playback, and the ability to store data on the client side. Additionally, HTML5 is designed to be more mobile-friendly and better able to handle multimedia content without the need for additional plug-ins like Flash. Overall, HTML5 is an improvement over HTML in terms of functionality and usability.

Compare HTML and HTML 5 features

HTML and HTML5 have some similarities, but there are also several key differences between the two.

• Semantic elements: HTML5 introduced new semantic elements like <header>, <nav>, <article>, <section>, <aside>, <footer> etc, which provide more meaning to the structure of the page, making it easier for search engines and assistive technologies to understand the content. In HTML, developers had to use non-semantic elements like <div> and <span> to create structure.

• Multimedia support: HTML5 includes built-in support for audio and video playback, which means that web developers no longer need to rely on third-party plug-ins like Flash to play multimedia content. In HTML, developers had to use plug-ins to play multimedia content.

• Form controls: HTML5 introduced new form controls like date, Search, tel, URL, email, number, range etc, which provide better input options for forms. In HTML, developers had to use JavaScript and other means to create custom form controls.

<form action="submit-form.php" method="post">
  <label for="name">Name:</label>
  <input type="text" id="name" name="name" required>
  <br>
  <label for="email">Email:</label>
  <input type="email" id="email" name="email" required>
  <br>
  <label for="password">Password:</label>
  <input type="password" id="password" name="password" required>
  <br>
  </forms>

• Canvas: HTML5 introduced <canvas> element, which allows for dynamic, scriptable rendering of 2D shapes and bitmap images. This allows for the creation of more interactive and engaging user interfaces.

<canvas id="myCanvas" width="300" height="150"></canvas>

• Web storage: HTML5 introduced new methods for storing data on the client side, such as Local Storage and Session Storage, which allow web developers to store data on the client's computer, rather than on the server. This improves the performance of web applications by reducing the amount of data that needs to be sent back and forth between the client and the server.

• Cross-browser compatibility: HTML5 is designed to be more compatible with a wider range of web browsers, which means that web developers can create more consistent and predictable experiences across different browsers.

Overall, HTML5 is more powerful, and flexible and has more features than HTML, which makes it easier to create more engaging, interactive and responsive websites.