What is the difference between pancetta and bacon?
Bacon and pancetta are both made from pork bellies; the difference between them lies in how they’re prepared and cured. To make bacon, pork belly sides are brined and then smoked. Pancetta, the Italian version of bacon, is made by seasoning a pork belly side with salt and lots of pepper, curling it into a tight roll, and wrapping it in a casing to hold the shape. It’s cured, but it isn’t smoked.

From here.