... the words a person knows or uses or all the words in a particular language.” Each linguist or scholar in his specialized field with his own set of criteria worked out different definitions of ... students in the class can see apparently. Summary In short, this chapter briefly reviewed the theoretical background of the study. In the first place, vocabulary and its connected issues like ... one. In comparison with students‟ answers the researcher found out only 5/120 students (4.3%) choosing the option “never”. Meanwhile, there were 4/11 teachers (36.4%) and 35/120 students (29.3%)...