 As with the sign-vehicle and the object, Peirce thought we could classify signs in terms of their relation with their interpretant. Again, he identifies three categories according to which feature of the relationship with its object a sign uses in generating an interpretant. Further, as with the classification of the sign in terms of the sign-vehicle and the object, Peirce identifies qualities, existential facts, or conventional features as the basis for classifying the sign in terms of its interpretant.