What do you understand by http ? How is it related to world wide web ?

The HTTP (Hypertext Transfer Protocol) is the set of rules for transferring hypertext (i.e., text, graphic, image, sound, video etc.) on WWW (World Wide Web).

HTTP is the protocol that enables the functioning of the World Wide Web by facilitating the exchange of information between clients (web browsers) and servers, allowing users to access and interact with web content.