Alternatively referred to as full color, process color is used in printers that only have four colors available (commonly cyan, magenta, yellow, and black). With process color, multiple colors can be combined generating what appears to be other colors.(https://www.computerhope.com/jargon/p/proccolo.htm)
CMYK color, a lot of dot to print out， for example news paper.
spot color
Printing technique where each color is printed in layers and the printer prints each layer until each of the required colors have been printed. Spot color printing is commonly performed on print jobs that require a special color that cannot be created using CMYK, for example, a florescent color.
full color print, for photo or art work.
hex triplets
Hex Triplet Colors are web colors used for font families and userbox designing.
