The interest of this research group, led by Sergi Torner, is the study of lexis as the object of dictionaries, both monolingual and bilingual, and the information that it carries on and that dictionaries may carry on. All Its members have research work on vocabulary and lexicon from different points of view, mainly descriptive and applied.

The working groups search for precise and detailed descriptions of semantic, morphologic and syntactic aspects that are treated or may be treated in dictionaries and which study may also give lexicographic improvements (separation of meanings, treatment of polysemy, verified equivalences, etc.). The working languages are Catalan, Spanish, French, and English.