Lot of familiar confusion in my household. I have lived in the UK for 8 years now, but still call things by their American names mostly. My husband is Scottish and too smart to argue.
I was surprised, on moving to the UK, how many foods I enjoyed that I thought were “traditional” for lack of a better word but were American mutts not readily available outside the USA. A couple that spring to mind are classic deli cheeses like Provolone or Swiss. I can buy Provolone or Swiss types of cheese in the UK, but they’re nothing like the rubbery, melty slices at grinder shops (grinders shops!) where I grew up.