The Million vs Billion quandary

     I hear people treat a "Billion" as if it's the next logical number after one Million...similar to going from a dime to a dollar.
     But a Billion is so much more than that. These graphics come from The MegaPenny Project, showing the relative size of a Million pennies and a Billion pennies....the web site goes into much more detail than I will here. They say, for example, that only in the U.S. is the word "Billion" used...elsewhere they refer to it as a Thousand-Million.

1-Million Pennies

1-Billion Pennies