Bourbon -Bourbon whiskey, or bourbon, is primarily made from corn mash.Bourbon whiskey is distilled and bottled at a minimum of 40% alcohol (80 proof).
Bourbon -It’s only produced in the United States and, according to U.S. regulations, must be made from a grain mash that is at least 51% corn and aged in new, charred oak containers
Scotch whiskey -Scotch whiskey, or Scotch, is mainly made from malted barley.the whiskey is distilled and bottled at a minimum of 40% alcohol (80 proof)
Scotch whiskey -it can only be produced in Scotland. There are two main types — single malt and single grain
Whiskey vs Whisky
The terms whiskey and whisky come about primarily from geographic differences.In the United States and Ireland, grain alcohols are referred to as whiskey, while in Canada and Scotland, they call it whisky.
Scotch vs Whiskey
The first difference is that scotch whisky is spelled without the "e" in whiskey. All Scotch is whisky (or whiskey), not all whisky is Scotch.