anything with sauce and cheese on it is a pizza. Anything
When you say anything, does that include something like sprinkles?
yes, or you can top it with vegetables, meats, and condiments. Or even without cheese. 
I mean technically, spaghetti could have sauce and cheese on it, but it's not pizza.
I guess, or any Italian cuisine from Italy. 
yes, a lot of Italian dishes have sauce and cheese on them, but they're not all pizza.
maybe not, the term pizza first was found in 10th century Latin manuscript. 
That's interesting. What was the definition of pizza?