“…Several researchers in corpus linguistics (e.g., Laufer & Ravenhorst-Kalovski, 2010;van Zeeland & Schmitt, 2013;Webb & Nation, 2008) have examined vocabulary threshold levels and the extent of lexical knowledge EFL/ESL learners need for comprehension (Laufer & Ravenhorst-Kalovski, 2010;Nation & Waring, 1997;van Zeeland & Schmitt, 2013;Webb & Nation, 2008). Such research has been found to be a reliable source of valuable information for teachers, learners, and publishers (e.g., Granger, 2002;Hoey, 2000;Millar, 2016;Molavi et al, 2014;Norberg & Nordlund, 2018;Schmitt & Schmitt, 2000;Zarifi & Mukundan, 2013).…”