The difference between Burger and Ground Beef Hamburgers

Now, you may ask yourself if ground beef is the same as hamburger beef. Well there are small differences in the quality etc. Just have a look here. Ground beef hamburgers:

Beef fat may be added to "hamburger" but not "ground beef" if the meat is ground and packaged at a USDA inspected plant. A maximum of 30% fat by weight is permitted in any hamburger or ground beef. Both hamburger and ground beef can have seasonings, but no water, phosphates, extenders, binders or added. They must be labeled in accordance with federal standards and labeling policy and marked with the USDA inspected the label.

Most ground beef is ground and packaged in local stores rather than in food processing plants under USDA inspection. Still, the Federal labeling laws on the fat content of application. Most states and cities to set standards for the storage of packaged ground beef which, by law, can not be lower than federal standards. If products in retail stores were found to contain more than 30% fat by weight, would be considered "adulterated" under federal law.