Generally speaking, the primary difference between these two sauces is the inclusion or absence of liquid, usually in the form of beef broth. The only liquids in Bolognese sauce are milk (or cream) and red wine. Traditional meat sauces are thinner and include beef broth or beef stock. In terms of flavor, Bolognese sauce is a subtle Italian meat sauce due to the inclusion of carrots and milk. There aren't a lot of overbearing Italian seasonings in the recipe and the hearty meat sauce sticks well to any kind of pasta! Traditional "American-Italian" meat sauces often includes a host of Italian seasonings which may include thyme, oregano and/or basil and usually includes beef broth or stock.