A dogs show name doesn't have to have anything to do w/ their "call" or "kennel" name, but they can... for example
Ch. Wandering Spirit Vom Wildweg CGC NDD is Haunter's show name, He was Haunter first and I wanted something... ghostly along those lines... if he wasn't wandering spirit he would have been Cave Canem (latin for beware of dog)
Ch. "PR" All-Night Blue Navigator is "Gators" registered name, Gator being short for Navigator (bluetick coonhound)
Ch. Wwind's And The Crown Roars is known as "Whisper" for no reason at all "Bernese Mtn dog)
Some of my future dogs will be
Nitewalk's I Walk The Line, aka "Cash"
Nitewalk's Something New And aka "Taboo"
Nitewalk's Rhyme and Treason aka "Wicked"
Of course there's no "I" in team... but hey look! There is an "I" in pie :)
Nicool - It doesn't have to be different - you want it to be more complex. Do you know how many "Ginger's" AKC would have registered. They start Roman Numerals behind the dogs name when that happens (I had a friend whose dog was named April. She registered her as just April and it came back as April XII or something like that...).
One of my puppies call names is Paris (her dam's name is Loreal and she looks like a mini version of her, so she HAD to be Paris) - registered name is : my kennel name "City Of Lights".
I also have dogs whose registered (AKC) name has NOTHING to do with their call name. Or I'll take the meaning of their name and use it for the registered name. Or do something that has to do with their parents names (one of my dogs is : my kennel name "Valiant Beauty". Her sire's call name means Valiant and her dam's call name means Beautiful).
It's kind of a play on words. Sometimes they are obvious. Sometimes they make no sense. :)