Kernel - the core functionality of an operating system, it translates commands from other
software directly to the hardware interfaces.
Distributions - operating systems based on the Linux kernel.
CLI/Terminal - stands for Command Line Interface, a method of interaction with the computer
based on text commands entered at the prompt.
GUI - stands for Graphical User Interface, a method of interaction with the computer that makes
use of visual representations of elements: files, folders and actions. It is the standard
environment for modern consumer oriented operating systems.