Have you replaced any British words with their American versions?
For example, switching out the word 'boot' for 'trunk', or ditching the word 'rubbish' for 'garbage'.
This is something I've noticed my 6 year old does pretty regularly. We went through a stage where 'sweets' became 'candy', 'holiday' became 'vacation' and 'courgette' became 'zucchini'.
That last one didn't happen but if you're still reading you've got my respect, or as the Americans might say '...mad props'.
That's not an Americanism really; people call it Scotch in British English too. It's just that because 99% of the whisky in the UK is Scotch anyway you don't really need to specify. Whereas because most whisky consumed in the US is bourbon, they tend to specify when they mean Scotch.
The same is presumably true in reverse, i.e. Brits using "bourbon" more than Americans because of the need to specify.
Personally I'm not bothered by the whisky/whiskey distinction. Whisky was traditionally Scottish and whiskey Irish, with the Americans going the Irish way and other countries (like Japan) going the Scottish way. But it's a bit of a meme to nitpick at this point; they're indisputably just two spellings of the same thing.
Once you've got your eye in, scotch and bourbon are quite different. Many (although not all) scotch whiskies have peat in their flavour profile (a kind of smoky, salty, earthy flavour which is very distinctive), while bourbons never do. Bourbon is almost always quite a lot sweeter than scotch.
They're also made quite differently. Bourbon is mostly corn, and often has lots of rye and wheat in the mix, whereas scotch is mostly made of barley. Bourbon is always aged in new oak barrels, whereas scotch is mostly aged in second-fill barrels (which might previously have been used for bourbon, wine, sherry, port, cider etc.).