The difference between die-cut and kiss-cut stickers is how the stickers are cut in relation to the silicone release backing paper. For die-cut stickers the sticker and the backing paper are cut to the same size and shape. For kiss-cut stickers the sticker is cut to a different size or shape to the backing paper.
Sticker printers have their own set of words to describe what they do. In this article I try to explain the meaning of full colour stickers, and show the difference between full colour and spot colour printing.