Embossing and debossing are the processes of creating either raised or recessed relief images and designs in paper and other materials.
An embossed pattern is raised against the background, while a debossed pattern is sunken into the surface of the material (but might protrude somewhat on the reverse, back side).
Why use it?
It creates additional feel and quality to a message. Have you ever failed to be impressed by pronounced messages in print? You take more notice!