structural:summarization
Etymology and terminology

The term hamburger originally derives from Hamburg, the second-largest city in Germany; however, there is no certain connection between the food and the city.

By linguistic rebracketing, the term "burger" eventually became a self-standing word that is associated with many different types of sandwiches that are similar to a hamburger, but contain different meats such as buffalo in the buffalo burger, venison, kangaroo, chicken, turkey, elk, lamb or fish such as salmon in the salmon burger, and even with meatless sandwiches as is the case of the veggie burger.

The term burger can also be applied to a meat patty on its own. Since the term hamburger usually implies beef, for clarity burger may be prefixed with the type of meat or meat substitute used, as in beef burger, turkey burger, bison burger, portobello burger, or veggie burger. In most English-speaking countries, including the United Kingdom, Ireland, Canada, Australia and New Zealand, a piece of chicken breast in a bun is a chicken burger. Americans would call this a chicken sandwich because the meat is not ground, whereas in other countries anything with a bun is considered a burger and a sandwich has sliced bread.