Brand and commodity name connect cheek by jowl already, have substaintial distinction again. Brand adheres to only be packed in commodity or on commodity, say to be used at the same time with trade name, ability makes consumer distinguishs the source of this commodity, and commodity name is the different raw material that uses discriminative commodity, different utility, can use independently. Brand is appropriative, exclusive, and trade name says (outside removing peculiar name) it is public normally.