Lexicon makes it possible for grammar to operate efficaciously on language. A strong repertoire of vocabulary is necessary to understand and communicate sane language unmistakably. In order to face the misunderstanding that the lack of a wide range of words can cause, your vocabulary repertoire should be built slowly and carefully. Once your repertoire is strong, the diversity in your language goes possible and makes your language rich and valuable. Consequently, your messages become readable, clear and easy to be decoded. "Perfect practice makes perfect" .