What are the different between hypertext hypermedia?
Hypertext is fundamentally the same like regular text; this can be stored, read or searched and edited along with a significant exception: hyper text consists of connections into the text to other documents.
Hypermedia documents have links not only to other pieces of text, although also to other types of media - images, sounds and movies. Supposes themselves can be selected to link to or sounds. World Wide Web is an open hypermedia system.