What's the difference between Spot UV and Raised Spot UV?

Spot UV is a flat finish of a shiny layer that goes on the exact spot where you would like your printed piece to have an area of a high gloss coating. Raised Spot UV is the same process, except the UV that gets applied stands out from the product, that if you run your fingers over the card you will feel the UV. The depth of the Raised Spot UV is 50 microns.