Thesaurus by definition - a dictionary with an unlimited selection, that is including all the words that met the originator of the available sources. Moreover, the number of sources can also go to infinity, including the linguistic works, dictionaries, literary works, recordings of speech and other materials.
Recently, under the influence of the English term for `Thesaurus` increasingly began to understand synonyms. However, the primary meaning of the term - `treasure` that is, tending to the completeness of collection of information about all the words of the language (including their interpretation, the use and translation into other languages).
The main purpose of the linguistic project of the Academy of the Full Moon - creating a vast database of structured vocabulary, which can serve both for the study of specific languages, as well as for studies of language in general.