From my understanding, a tonal language is when a difference intonation of the word changes its meaning. Now: Italian for example (which I was told is not tonal) differentiates questions from affirmations simply on how you say the sentence (while other languages have things like a different word order or words indicating that what you're saying is a question): isn't this tonality, since you're changing what you're saying completely solely based on the pronunciation?

This is not just for questions: pretty much all punctuation represents a way of pronouncing the sentence which usually changes how people interpret it, and there's the fact that putting emphasis_ on a word will also (usually) change how people perceive the sentence, thus changing its meaning.

Don't most languages do something like this? Is this tone, or is it something else?