The present study aims to analyze comparatively English and Persian research articles (Linguistics, Literature, and Library and Information disciplines) in terms of number and degree of utilization of sub-types of lexical cohesion in order to appreciate textualization processes in the two languages concerned. The study analyzes 60 research articles (30 articles in each language) in terms of sub-types of lexical cohesion. The study reveals that the order of occurrence in descending order of sub-types of lexical cohesion is ( Rep., Col., Syn., Gen.N., Mer., Hyp., and Ant.) in English data, while the order in Persian data is ( Rep., Syn., Col., Ant., Hyp., Mer., Gen.N.). In both data the most frequent sub-types are repetition, collocation, synonymy. In English data the general tendency is towards the use of repetition and collocation but Persian data show the general tendency towards the use of repetition and synonymy. This study might have implications for teachers and researchers in the field of teaching English as a foreign language because of the fact that teaching sub-types of lexical cohesion to foreign language learners will improve the quality of their reading and writing.