These are custom colors that are chosen from a Pantone chip book. The benefit of using Pantone colors for text and line work is the fact that the color is solid and not made up of CMYK, thus giving a more crisp and accurate edge. The color does not vary with Pantones as it does when a 4 color process is used. A wash-up charge is applied to each Pantone color used. Please inquire what the wash-up charge would be if you're thinking about using Pantone colors in your packaging.
UV Coating is a clear liquid spread over the paper like ink and then cured instantly with ultraviolet light. It can be used as a spot covering to accent a particular image on the sheet or as an overall (flood) coating, this is called spot UV.