"Proper" use of a word is the one that most people understand. And I think most people think 9/11 when they hear terrorism, and even if you regard this attack as an immoral crime, this is really not the same thing, at all.Indeedy, and it's worth talking about. But if we're gonna use the word, why don't we use it properly? Using a word as baggage-laden as "terrorism" incorrectly makes it even harder to have the discussion you've mentioned.
I mean I just watched Vietnam and Ken Burns didn't call the Viet Cong terrorists, even though by the dictionary definition of the word they most certainly used that tactic.
I think framing the conversation in a way that paints an accurate picture what is actually going on is a bit more important than reclaiming the word terrorism.
And what's going on in the west bank is an asymmetrical violent conflict, sadly, like most conflicts, it's kids who pay the highest price.