However, in order to progress in a foreign language, students need to be able to persue what they are listening and reading. That is, the information must be understandable with the end goal. It should be helpful and significant to the student and help with obtaining (Krashen, 1982), but in the event that students don't comprehend a huge piece of the vocabulary in the language that they are reading or listening, then this language is not understandable and therefore cannot be useful for acquisition. For listening and reading to be understandable, knowing vocabulary is crucial. The more words a student know, the more s/he understands reading passages, listening texts and the better essays s/he can write. Moreover, knowing many words makes easier to comprehend the grammar and sentence structure. There is no doubt that learning process will be easier if a learner knows a good size of