1 This paper focuses on lexical opposition and discourse contrast. We define opposition as the relation between two lexical units that contrast with each other with respect to one key aspect of their meaning and that are similar for all the other aspects (eg to increase/to decrease, up/down). On the other end, we consider discourse contrast as the relation between two parts of a coherent sequence of sentences or propositions (ie, discourse arguments) that are in conflict. Both opposition and contrast hold between contrasting elements: the first at the lexical level, the other at the discourse level.