Chapter Three Lexicon Morphology I Lexicon 1. The ellings orlexicoh a In its most general sense, lexicon is synonymous with vocabulary, denoting the system formed by the total sum of all the words and word equivalents that a given language possesses. a In its technical sense lexicon is is synonymous with lexicology, which is a branch of linguistics dealing with the vocabulary of a language and the properties of words as the main units of language in other words, it deals with the analysis and creation of words idioms and collocations.Chapter Three Lexicon & Morphology I Lexicon 1.The meanings of lexicon  In its most general sense, lexicon is synonymous with vocabulary, denoting the system formed by the total sum of all the words and word equivalents that a given language possesses.  In its technical sense, lexicon is synonymous with lexicology, which is a branch of linguistics dealing with the vocabulary of a language and the properties of words as the main units of language; in other words, it deals with the analysis and creation of words, idioms and collocations