Helping us master kinds or levels of meaning
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advances in the ability to produce or use the language he increases the range and depth of his understanding, and an increase in understanding shows it self in a
greater ability to produce, so, the use of vocabulary here, really important and really needs, especially in improving speaking ability.
Ralph A. Micken said that the extemporaneous speaker must have a vocabulary sufficient for needs of repletion with variety. If he is an ordinary
individual, he will find that he does not have this vocabulary unless hide literately sets out to build it up. The vocabulary of the average person, even the experienced
speaker, is somewhat funnel-shaped
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. It means that vocabulary is really useful for the speakers while they are
speaking because it will help their fluency in brain storm their ideas, and also by having lot of words or stock of words can choose the right and suitable words
when they are speaking.