It's not necessarily when/how they're made (although that's part of it), but how they're marketed. Take soft drinks for example. Brand-name: Dr. Pepper

It's not necessarily when/how they're made (although that's part of it), but how they're marketed. Take soft drinks for example. Brand-name: Dr. Pepper Off-brand: Dr. Perky Unbranded/Generic: "Soda" in a white can