the semiotic necessarily starts from a linguistic material that is given, inventoriable, finite… the semantic, for its part, belongs to a different universe: it is founded on the act of enunciation
Benveniste establishes the semantic field not as a closed inventory but as an open universe constituted by enunciation, radically distinguishing it from the semiotic register of finite, given signs.
, Last Lectures: Collège de France 1968 and 1969, 2012thesis