The other half is scope, and it is the part that makes the distinction click for most people.
Tone in a tonal language operates at the level of the syllable. Every syllable carries one, and the tone travels with that syllable wherever it appears in a sentence.
Intonation in English operates across a phrase or sentence. The rise is not on the word, it is on the utterance, and the same rise applies to a one-word question and to a fifteen-word one.
You can hear this in a longer example. "You are going home?" rises at the end regardless of which words are in it. That contour belongs to the sentence, not to any word in it — which is exactly what a tonal system does not do.
English does use pitch heavily and meaningfully. It just uses it at a different level of the structure.