Navigation bar: The navigation bar is the part of the website or online page that helps visitors to travel around the online document. Webpages generally have a primary navigation bar, then a secondary one on all the subpages. A well-designed website will have a clear, easy-to-use navigation system that makes it easy to find what you want. There are not as many of these as you may think.
Netiquette: A portmanteau of 'network etiquette' or 'internet etiquette', you can think of this as the online, unwritten version of Debrett's. Netiquette is the correct or acceptable way of communicating with others on the internet. Most forums and interactive sites have a page for newcomers that sets out its 'rules'. In a nutshell: respect others' views, be polite, and DON'T SHOUT.
Network: A computer network is a collection of computers and other hardware linked by communication channels. These channels allow sharing of resources and information via a variety of communication protocols. Simply put, a network is a group of devices connected to each other.
Nomophobia: The term being used to describe the addiction to mobile phones and the affects that suffers demonstrate - visit the E-safety Support Knowledge Base for more information.