A terrorist's goal is to frighten people into submission by causing fear of harm or death into civilians and attacking civilian's (like 9/11).
A freedom fighter makes statements to the people by attacking appropriate military or government sites
What is the definition of a government site?
The CIA waged war on the Taliban for a decade, and before that, in Afghanistan, throughout the 80's. They also radicalized the latent radicals in many Mid-Eastern countries, and then turned them loose with weapons, as a proxy against Russians and even democratic self-government movements.
Those same people then attacked the US, on US soil, hitting the Pentagon, apparently attempting to hit the US Capitol, and hitting the World Trade Center. The WTC, which by the way, contained offices of the CIA, and DOD, and the NYC government.
I just don't think your definitions are that accurate. The 9/11 terrorists attempted to attack the US seat of political, military, and economic power. Yes, a lot of very innocent civilians died. Is that the definition for terrorism? That's a tough one, it has a lot of very difficult implications behind it.