Yard vs Garage

Well here is the great debate. As was were cleaning out our garage and getting ready for a sale, we started a discussion. Is it a Yard sale or a Garage sale? And why is it called either. We are not selling yards or garages. I can understand yard sale because we put it out in the yard. Is it called garage because that is were all the stuff you don't want ends up for sale? I am sure you all have opinions and I would love to hear them. So please shed some light on this subject for me. By the way it will be this Saturday that we have our Stuff Sale that we will be putting in the driveway. So maybe we should say we are having a driveway sale.