WWW or World Wide Web is not the same as the internet. It is a system of Internet servers that create specific documents. It has one main language, HTML, which creates other documents such as video files, graphics, and audio files. The World Wide Web has pages that can be accessed using a Web browser.
HTML makes hyper text pages. HTML is a simple programming language that deals with high level constructs like images, list, and headings. HTTP is the most common protocol. It is designed specifically for the world wide web. HTTP is a structured text that uses hyper links between nodes that contain text. A URL allows hyper text documents to give a link to other hyper text documents located in the WWW. It allows the use of other protocols like HTTP and HTML.