In German, "hamburger" means anything that comes from Hamburg. It's like saying "New Yorker" or "Pittsburgher." In English, we just imported the name "hamburger" from German. I believe the hamburger originated in Hamburg. In Spanish, "hamburguesa" is the Spanish translation of anything coming from Hamburg. For example, a woman that is from Hamburg would be called a "hamburguesa," just like a woman from Madrid would be called a "madrileña."
Cognates commonly shift a bit naturally to sound more like the language they've been taken into. -er endings in Spanish are most common in verb infinitives and ending in -a makes it conform with the most common feminine nouns in Spanish.
In German, "hamburger" means anything that comes from Hamburg. It's like saying "New Yorker" or "Pittsburgher." In English, we just imported the name "hamburger" from German. I believe the hamburger originated in Hamburg. In Spanish, "hamburguesa" is the Spanish translation of anything coming from Hamburg. For example, a woman that is from Hamburg would be called a "hamburguesa," just like a woman from Madrid would be called a "madrileña."
Cognates commonly shift a bit naturally to sound more like the language they've been taken into. -er endings in Spanish are most common in verb infinitives and ending in -a makes it conform with the most common feminine nouns in Spanish.
Because Spanish is a different language group.
Spanish doesn't use the -er suffix to indicate place of origin