i think it is because Bob rymes with Rob
Billy comes from the nickname for "William", and the meaning of William is "will helmet, protection". Bob comes from Robert; the meaning of Robert is "bright fame". However, both names being so short may imply different original meanings.
Bob is typically short for the name Robert. It is originally a Germanic given name. Other variations of the name Robert include Bobby, Bertie and Robby.
Robert
Some people name there children simply bob. Others may be named Robert or Bobbert, but simply shorten their name to bob. Bob can be a name or a nick name.
Bob can come from the name Rob, Robert. It's just derived from those names, short cuts.
Bob
Robbie, Bob or Bobbie.
bob jovial
Robert and William were known as the "Doyle brothers."
Robert park. His nickname is bob. ......."
No, it's Anglo-Saxon. Robert (from which the nickname Bob comes) means "Shining with fame."
Robert Wadlow's nickname was the "Alton Giant" or the "Giant of Illinois."
Robert Horry was given the nickname Big Shot Bob because of his ability to make important shots under extreme pressure. For this reason he is considered one of the greatest clutch basketball players in history.
Radar, like the character Walter 'Radar' O'Reilly on MASH.
It does not. Robert is shortened to Rob Robby, Robbie or Bob. Richard is shortened to Rich, Ricky and Dick
The male given name "Bobby" or Bob is often a nickname for Robert.
Bob, Bobby, Rob, Robby and Bert are the common nicknames for Robert.