lexicology

Not to be mistaken with lexicography.Lexicology (from lexiko-, in the Late Greek lexikon) is that part of linguistics, which studies words, their nature and meaning, words' elements, relations between words (semantical relations), words groups and the whole lexicon. The term first appeared in the 1820s, though there were lexicologists in the straight meaning even before that. Computational lexicology as a related field (in the same way that computational linguistics is related to linguistics) deals with the computational study of dictionaries and their contents. An allied science to lexicology is lexicography, which also studies words in relation with dictionaries - it is actually concerned with the inclusion of words in dictionaries and from that perspective with the whole lexicon. Therefore lexicography is the theory and practice of composing dictionaries. Sometimes lexicography is considered to be a part or a branch of lexicology, but the two disciplines should not be mistaken: lexicographers are the people who write dictionaries, they are at the same time lexicologists too, but not all lexicologists are lexicographers! It is said that lexicography is the practical lexicology, it is practically oriented though it has its own theory, while the pure lexicology is mainly theoretical.
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La lexicologie est une discipline étudiée par la linguistique.
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Die Lexikologie ist innerhalb der Linguistik die Lehre von den Strukturierungen im Wortschatz.Die erst seit den 1960er Jahren innerhalb der Linguistik eigenständig existierende Disziplin untersucht die Bestandteile einer Sprache (spezielle Lexikologie) oder von Sprache allgemein (allgemeine Lexikologie) und versucht, zwischen den einzelnen lexikalischen Bestandteilen (Morphemen, Wörtern und festen Wortgruppen) Beziehungen und Regeln festzustellen.
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Leksykologia - nauka o słownictwie, o zasobie wyrazów i związków wyrazowych. Zazwyczaj wymieniana w połączeniu z leksykografią, dla której jest nauką pomocniczą.Termin leksykologia został po raz pierwszy użyty w latach 20. XIX wieku, choć zajmowano się nią już wcześniej.
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La lessicologia è la disciplina linguistica che si occupa della strutturazione del lessico. La disciplina, che esiste autonomamente solo partire dagli anni '60, compie ricerche sui componenti di base di una lingua (lessicologia speciale) o della lingua in generale (lessicologia generale) e cerca di determinare regole e relazioni tra le singole componenti lessicale (es.  morfema, parola e stabili gruppi di parole).
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