“…In this regard, vocabulary knowledge (or lexical competence) is widely recognized by many vocabulary acquisition researchers as a fundamental component of language acquisition and communicative competence (Hairrell, Rupley, & Simmons, 2011;Nation, 2013;Ang, 2014). Knowledge of vocabulary is also closely associated with the four traditional languages skills of reading, writing, listening and speaking (Brown, Waring, & Donkaewbua, 2008;Crossley, Salsbury, & McNamara, 2011;Mehrpour & Rahimi, 2010;Karami & Salahshoor, 2014).…”