WWW stands for World Wide Web is an information space with the combination of all resources and users on the Internet. Which allows the retrieval and display of text and media to your computer. It is a basically a system of Internet web servers where the documents are formatted into an HTML language which supports links to other documents as well as graphics audio and videos.
When we enter the Domain name in your browser the browser retrieves for the nameserver for the requested domain name and request for the ip address from nameservers, from the ip address it requests for the website or web page which has been entered , Nameserver also can be defined as any server that has DNS software installed on it.