First thing to note about the party was that once again someone I'd just met assumed I was Canadian. I'm going to start keeping track of these. That'll be number 1.
Second thing to note is an interesting Cocktail Party Effect I experience. The Cocktail Party Effect is our ability to tune into one conversation and ignore others in a noisy environment, but while still apparently paying enough attention to the surrounding noise to switch our attention when someone in another conversation says our name. I've noticed that I switch attention when others say American or the States, etc. I can't help but (BrE) earwig (=eavesdrop).
Today I found myself listening to the end of a conversation between Better Half's Sister and Distant Relation. DR is an Englishman with a vacation home in South Carolina (first time I've come across that combination!). He's trying to supervise some plumbing work from a distance, and was saying that "everything there has a different name." I didn't catch all of the examples, but did get (BrE) tap versus AmE faucet and BrE bath vs AmE tub. I can add the following. Some of these you would hear in either country, but different words are preferred in the two countries.
|hot-water heater||geyser (for certain types)|
All of this ignores discussion of what to call a toilet or the room in which a toilet stands. I'm saving that for another time. [Now available here.] Meanwhile, can anyone add to the plumbing list? I know there are more differences out there...