If used correctly as intended by their designers, BeagleBones and PocketBeagles use Capes and Raspberry Pis use Hats. You will probably just hear and see us using the term Cape to refer to both Beagle Capes and Pi Hats. This is partially due to the fact that the Pi Hats require a specially formatted EEPROM which we do not require since FPP has its own EEPROM format which is cross-platform and usable on both platforms.