I’m an American who lived in England for a couple of years. Due to American media the majority of everyone understood what I meant when I said things like soccer, trunk or hood of a car, fries, etc. Words with different meanings between the two could get confusing like biscuit, chips, or pissed.
Since soccer doesn’t have another meaning I never ran into someone who didn’t know what I was talking about. However, when saying football in an American accent some thought I was referring to American Football by default.
I can only remember one instant where someone did not know what I was talking about. That was when I asked someone at work where the dumpster was and I got a blank stare. I explained, the big metal thing outside for trash and they were like, “oh the skip”
I worked at a pizza buffet back in high school. There was a guy who would come in from time to time and eat 6 whole pizzas. He would wait for us to put a fresh pepperoni out then just dump the entire thing on his plate.