Html :
HTML or Hypertext Markup Language was created by Berners-Lee in 1991.
It is a markup language used to create and structure website templates or web pages to present the content on the World Wide Web.
It consists of a series of elements and the HTML elements tell the browser how to display the content.
HTML helps in making the text more interactive and dynamic.
You can save an HTML page by adding .html or .htm in web page name.

features of HTML
1 .It is a markup language that provides flexibility to design web pages with text.
2 .It is easy to use and learn.
3 .HTML is platform-independent and can be used on Windows, Linux, and Macintosh, etc.
4 .It enables programmers to add images, video, and audio to a web page to make it more interactive.
5 .HTML allows programmers to add a link on the web pages, helping the readers to browse the information of their interest.
6 .It is case-insensitive. You can use tags either in lower-case or upper-case.

HTML5 :
HTML5 is the latest or updated version of the markup language that defines HTML.

Some new features in HTML5 include: