Minced pork is the traditional name in United Kingdom. Elsewhere, butchers sell the same piece — or a close cousin — under a different name.
Interchanged and frequently blended in meatballs, ragù, and meatloaf; pork carries more fat and stays moister, beef brings deeper flavour.
Chorizo argentino is coarsely ground pork, seasoned simply and stuffed into casing; seasoned minced pork is the closest thing to it loose.