In the WWII the same people who were hiding in the mountains of Yugoslavia, Slovakia, Romania, Ukraine etc. were called terrorists by Nazis too. Today they are known as partisans and are respected in these countries.
A partisan is a member of an irregular military force formed to oppose control of an area by a foreign power or by an army of occupation by some kind of insurgent activity. The term can apply to the field element of resistance movements, an example of which are the civilians that opposed Nazi German rule in several countries during World War II.
My question is, why are these partisans in Afghanistan, Pakistan etc. called terrorists and not partisans?