CMYK Stands for "Cyan Magenta Yellow Black." These are the four basic colors used for printing color image
RGB Stands for "Red Green Blue." RGB refers to three hues of light that can be mixed together to create different colors.
In my Graphic Design Skill class we learned the difference between RGB and CMYK. This understanding came in clutch when I took my Print Production class. The thing I love most about this assignment was that it made me feel like a child again, as if I were coloring or throwing paint around.