Expresión fija, elemento del contorno, entorno fraseológico, polisemia.

Abstract

Phraseology is possibly one of the most difficult aereas when learning a forreign language. This concept is the starting point of this paper. This is why dictionaries of idioms have to fulfil certain criteria to be useful when learning a forreign language.  This is why it is fundamental, from our point of view, to establish a correct lemmatization, able to give as much information as possible about the limitations of the different combinations according to the nature of the elements acting as subject or complements and the possible combinations and restrictions with the attributive verbs.On the other hand, it is essential to describe clearly the contextual elements in order to make clear the elements that can determine the different meanings.