The data analysis
To provide the required information about the degree and percent of Coverage of academic word list and general service list, a web application was developed by the researchers (available at http://takvaj.ir/main/aw_analyzer.php). This software calculates the degree of overlapping between the selected corpus and AWL or GSL. The procedure was run for the whole corpus of the study to achieve the percentage of AWL and GSL coverage in the whole corpus that include the data from the total selected fields of science as well as for each fields of science to see the coverage of AWL and GSL in each of them separately and also to make comparisons on the use of AWL and GSL among fields of study.