What's the difference between Salami and Pepperoni?
Pepperoni is a variety of Salami. Salami is a dried sausage which can be made of pork, beef, veal, horse, donkey, poultry or game. Different spices, smoking and vegetable ingredients give the different salame their particular taste. 

Pepperoni limits its ingredients to beef pork and poultry and belongs to the more spicy varieties of salame.