FWIW, Bruschetta is the toasted bread upon which you can put a variety of toppings, either traditional or innovative.
Bruschetta is NOT the topping, contrary to popular belief in US.
The tomato topping is only traditional in some parts of Italy, and at "tomato times" of year. In Tuscany, for example, sauteed chicken livers are commonly used for Bruschetta topping.
and btw, it is pronounced "Brus-Ketta" even if the TGI Friday's ad says otherwise.