What are the key differences between whisky and bourbon?

Whisky and Bourbon are both types of distilled spirits, but there are key differences between them. Bourbon is a type of whisky that is made primarily from corn, while whisky can be made from a variety of grains. Bourbon must also be aged in new charred oak barrels, while whisky can be aged in a variety of barrels. Additionally, bourbon is made in the United States, while whisky can be made in various countries around the world.