GUI

Graphical User Interface

Is a form of user interfaces that allows users to interact with electronic devices through graphical icons.

An icon is a small graphical representation of a program or file.  When you double-click an icon, the associated file or program will be opened. Icons help users quickly identify the type of file represented by the icon. An image is an example of icons

A command line is a blank line and cursor on the screen, allowing the user to type in instructions for immediate After typing a command, it is executed by pressing the Enter key execution.