Difference between a burger and a sandwich in the USA?
Where I'm from, a burger is made with a hamburger bun and a patty, while a sandwich is made with sliced bread. But in the US it seems that they are the same thing: https://www.mcdonalds.com/us/en-us/full-menu/chicken-and-fish-sandwiches.html
What's the difference between a burger and a sandwich there?