Professional students have to enrich their vocabulary to secure a job and meet the challenges in the job. But the question is whether at the tertiary level they can be allowed to be in groups in the class and to fend for themselves or given minimal assistance from the teacher or they need to rely on the teacher for improving their knowledge of vocabulary. The researcher adopted both the teaching methods in the study and in addition to the teaching methods, she used both incomprehensible and simplified material for the study for the study. The 2x2 factorial design which was followed shows that neither method of teaching nor the nature of input has much positive effect on them to improve their vocabulary. © IAEME Publication