@turkay1-- Salchichon is Spanish. It's also the Spanish word for "sausage." The Italian version of salchichon is called "salsiccia" as far as I know. I've has salsiccia sausages with fennel seeds but I don't know if all salsiccia sausages are made that way.
Both Spain and Italy are Mediterranean countries and I'm sure the two cultures were influenced by one another. Their cuisines might be similar, but I'm pretty sure that salchichon is a Spanish sausage.
@turquoise-- You're right, those sausages are very similar. I think sausages made from pig meat is quite popular in Spain. Pork sausages are popular all over Europe really, whereas beef and lamb sausages are more the norm in Eastern Mediterannean countries and the Middle East.