What is difference between Tennessee whiskey and bourbon whiskey?

Bourbon. there is several issues hiding in your question let´s break it down. 1 If it is Bourbon it is named Whiskey not Whisky

this is a tradition from Irland followig the new imigrants in US

Correct would be American Whiskey .. Bourbon is one of them

Whisky from Scotland (UK) is by law defined as grain or barley based

destillation up to maximum 95% and then matured a minimum 3 years on oak.

If only Barley normally destilled in Pots then it is Malt Whisky

If only Grain normally destilled in patent stillt then it is grainwhisky

If blended then it is Blended whisky ... what normally is named a scotch 2 Bourbon is Whiskey produced in Kentucky specifically

in the county Bourbon it is not allowed to sell alkohol -

3 Bourbon is made out of "NOT Barley" basically Corn

Whiskey is stored on frech American Oak barrels

Whiskey is typically destilled at higer % than malt whisky but

lower than grain whisky 4 There is other American Whiskeys ... not just Bourbon ... Jack Daniels is one that is very alike but is not made in Kentucky ... and with an add on ... filtering through thick layer of coal from maple wood.