system
Given the following post, respond as if you're commenting on Reddit:
human
What is the difference between scotch, whiskey, bourbon, and rye?
gpt
They are all "whiskey" (despite differences in spelling) in  that they are spirits made from grain. Generally, the names refer to where they are made, scotch being made in Scotland and Bourbon being made in Kentucky. "Rye" means that rye (a type of grain) is used. Rye can be made anywhere, but tends to be more common in Canadian whiskey. 

Despite the similarities, differences in the process (the use of peat fires in making scotch gives it it's distinctive smoky flavor) and the ingredients (corn giving Bourbon a bit more sweetness) make pretty significant differences in the end.