Graphical User Interface (GUI)
The graphical user interface, or GUI, is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, instead of text-based UIs, typed command labels or text navigation. GUIs were introduced in reaction to the perceived steep learning curve of command-line interfaces (CLIs), which require commands to be typed on a computer keyboard.
Essentially, GUIs are visual user interfaces that through input methods like keyboards and mice, allow for interacting with an a computer's shell