Terrorist: a person who uses terrorism in the pursuit of political aims.
(Terrorism: the use of violence and intimidation in the pursuit of political aims)

Guerrilla: a member of a small independent group taking part in irregular fighting, typically against larger regular forces.

Insurgent: (adj) rising in active revolt; (n) a rebel or revolutionary.

Rebel: a person who rises in opposition or armed resistance against an established government or ruler.

Courtesy of Oxford American Dictionary, 2001 edition. (Note to you-know-who: I told you I bought two of them, right?)
Why do I bring it up? Because 'rebel' has been occurring with more regularity in AP reports on Iraq. I think it's a good sign.

Of course, I didn't know that 'insurgent' was synonymous, but I bet most people don't either.

- posted by Dactyl @ 9:33 AM