In what way? A hamburger is a sandwich, and alcohol is a drug. A hot dog is a sausage, too.

Sandwich isn't necessarily a hamburger though. Also, doesn't a hot dog refer to the whole package? That'd make it different from a sausage.

I find it sad that you're being voted down for having different cultural associations and definitions than another poster.

Americans consider hamburgers to be a type of sandwich. It can be confusing to people from other countries who don't consider meat in a bun (as opposed to meat between slices of bread) to be a a sandwich.

Yeah. I'm from Sweden and when I think sandwich I think of this: http://i.imgur.com/hJwtQ7N.png

Sorry to keep doing this, but I would say a bun is bread, too: “A bun is a small, sometimes sweet, bread or bread roll,” quoth Wikipedia.

> Sorry to keep doing this

I guess likewise, because while bun is a type of bread, bread doesn't, again, necessarily have to be a bun.

Of course not. I’ve been saying for this whole conversation that it’s simply odd, when X is a subset of Y, to use language that implies that X and Y are disjoint sets.