With a computer, navigation refers to the act of opening and moving through computer menus, like the Start menu in Windows, opening software programs, or viewing files in Windows Explorer. More generally, to navigate is to move your mouse around the screen to access icons and the other features of an operating system.
Web navigation refers to the process of navigating a network of information resources in the World Wide Web, which is organized as hypertext or hypermedia. The user interface that is used to do so is called a web browser.
Example of usage – “A website’s overall navigational scheme includes several navigational pieces such as global, local, supplemental, and contextual navigation; all of these are vital aspects of the broad topic of web navigation. Hierarchical navigation systems are vital as well since it is the primary navigation system.”