1.Ragu is a meat-based Italian sauce that is served with pasta while Bolognese sauce or Ragu alla Bolognese is a variation of ragu. 2.Ragu is thicker than other sauces, and while other variations of ragu such as Ragu alla Napoletana use red wine, Bolognese uses white wine. 3.Other ragu sauces use it for spaghetti pasta, but Bolognese uses it with wider-shaped pasta like lasagna because the thick sauce blends better with wider-shaped pasta. 4.Ragu and Bolognese taste better when cooked for as long as five to six hours.