@lynneguist Grew up in UK & would generally distinguish “roundabout” (typically large with an impassable centre) and “mini-roundabout” (small, raised paint). All are still roundabouts, as you say.
I wrote a book on fraud, and have since done quite a lot of consultancy on its prevention. The single biggest advantage a fraudster has is the tendency of people to take the news that they might have been deceived as a personal insult.