Tuscan vs. Doric Order

Does anyone know the difference between the Tuscan and Doric orders? As far as I can figure, Tuscan columns are always unfluted (although Roman Doric occasionally is as well) and the entablature is plain. Is there more? Am I missing something?

I think Tuscan was mainly used in wood structures. There is also a difference in the overall shape of the columns, and I think the base is different from the Roman Doric. I understand your confusion. I didn’t realise just how much they resemble each other.