This is the term used to describe the address of your web site on the Internet. It will usually take the form www.yourdomain.co.uk. The term refers only to the last part (yourdomain.co.uk). It identifies you on the Internet, and all you mail will be sent through it. Domain name are registered by a central body responsible in each country.
email is a messaging system that can use several protocols (POP & SMTP & IMAP) to send and receive electronic messages. These message can contain text, graphics or file attachments. You will use a program or application called a Mail Client such as Microsoft Outlook Express to send, receive and manage email.
Meaning default or 'common'. We use generic to describe a template that is used across all sites to start with. It has no individuality.
GUI or Graphic User Interface
Pronounced 'gooey' the GUI is what you see on your computer screen. It provides a method of interaction with your computer whether it be typing or drawing or sending email. Most applications will have their own GUI
Your operating system is what makes your computer run and provides a Graphic User Interface (or GUI) to help you manage files and run applications. Example are Microsoft Window XP, 98, 95, Unix, Linux, and Mac OS.
This is a piece of hardware (a chip) inside your computer that is used to store data while you are using your computer. It is much faster than a Hard Disk but it is erased each time you turn your computer off.