BAR: Not a U.S.-style bar. Those places that have U.S-style bars will advertise "American bar" - generally hotels. While you can buy beer, brandy, or other alcoholic beverages at Italian bars, the central feature is the espresso coffee machine. You can have a Caffe or Espresso (about Euro 70 ) or a Cappuccino for about Euro 80 cents to 1 Euro. Italians visit bars throughout the day, but especially in the morning when pastries are served with the coffee.
ENOTECA: A place where you can drink wines. You can usually buy the whole bottle or consume by the glass.
GELATERIA: Serves Home made ice cream. Giolitti is one of the most renown in Rome and it is surely worth a walk. I Tre Scalini in Piazza Navona is famous for its 'Tartufo ice cream' but expensive: somebody has to pay for the location.
PASTICCERIA: Pastry shop, often connected to, or part of a bar. Such a sign usually means a wider selection of pastries available. Many serve foods other than pastries such as sandwiches ("panini," literally, "little breads.") If panini is advertised on a sign, again, you could expect a larger selection. These are excellent places to get a quick, inexpensive snack or lunch. As in a bar, you pay first and order second.
TAVOLA CALDA: Literally, "hot table." The closest U.S. translation is "grill." These are more elaborate than panini shops and feature hot dishes. Some are small with only a few choices each day, and you select what you want from a glass-enclosed display. Most have a few tables. More elaborate ones are similar to U.S. self-service cafeterias.
ROSTICCERIA (Girarrosto) / Pizza al Taglio : These shops sell rotisserie-cooked meats, most often whole chickens sometimes advertised as a "polleria." They also offer "suppli" - a bowl of fried rice with mozzarella inside, crocchette - a bowl of fried mash-potatoes, Pizza al Taglio - pizza by the slice, and other inexpensive lunches or quiick dinners.
RISTORANTE: A restaurant offering a large-selection menu and full waiter service. These range from small and intimate to very large and ornate (and sometimes expensive).
PIZZERIA: Just like in the U.S., pizzerias sell pizza. Pizza was invented in Italy but is quite different from the pizzas served by the U.S. Pizza Chains. Italian pizzas are individually-sized or no more than 10-12 inches in diameter and come covered in a wide variety of toppings. Most pizzerias also sell other foods, and many other types of eating places also sell pizza. For example, a ristorante-pizzeria offers pizza as an alternative to its full restaurant selection.
TRATTORIA: With full waiter service, a smaller, usually family-run restaurant. The menu is more limited, the decor usually less ornate, and the prices usually lower than a full ristorante.
PUB / BIRRERIA: Like a British pub or American bar, these have become popular in Rome and Italy. They have a variety of beers on tap, plus cocktails and other alcoholic beverages. A 0.4cl ( about 1 pint) beer is around Euro 4 to 5, cocktails Euro 6 -7, glasses of wine Euro 2 to 4.
HOSTARIA: The more popular version of the Enoteca (which is the more Yuppy version). Usually an Osteria serves home-made wines.
Take a look at some of the best Rome Resturants