“…Further research conducted on the usefulness of academic words confirms these arguments, indicating the supportive role of academic words in English academic texts (Campion & Elly, 1971;Cowan, 1974;Durrant, 2016;Farrell, 1990;Hutchinson & Waters, 1987;Nagy & Townsend, 2012;Nassaji, 2006;Praninskas, 1972;Staehr-Jensen, 2005;Trimble, 1985). For example, it has been found that academic vocabulary plays a role in L2 learners' academic achievements (Garcia, 1991;Li & Pemberton, 1994;Qian 1999Qian , 2002Snow, 2010;Stahl & Fairbanks, 1986), reading comprehension (Clark & Ishida, 2005;Park, 2012), writing skills (Cobb & Horst, 2015;Engber, 1995;Gass & Selinker, 2008;Gonzalez, 2013;Grobe, 1981;Shaw, 1991;Townsend & Kiernan, 2015) and academic English proficiency (Townsend, Filippini, Collins, & Biancarosa, 2012).…”