No but your biscuits aren't our biscuits (they are scones. God knows what other food you call scones are), so you're already one word down, is what BoB is trying to say.
You have crackers or cookies to describe this range of food; while we have biscuits, crackers and cookies to describe that same range.


You pretty much got it in your initial post on the matter:
I don't think we have fewer words. Our words just mean different foodstuffs.