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Could be several things on a window. They have some felt or cushion in the rails they go up and down in, they have slides at the top to guide it and there are mechanical parts that go up and down. Only way to tell for sure is to take the door panel off and find the noise. You might try spraying some WD-40 or some grease in there with the window up, might get lucky and hit a part that is making the noise.
Need to be lubricated and sometimes replace parts for wear and tear. Probably out of adjustment some too if the parts are worn.