The paper aims to compare and contrast lexical and syntactic structures in Russian and Persian. While it preserves much of its ancient synthetic¬inflexional structure and a Common Slavonic word base, modern Russian shares a large stock of the international vocabulary for politics, science, and technology. Verbal inflection today is considerably simpler than in Old Russian. Russian language has on hand a set of prefixes, prepositional and adverbial in nature, as well as diminutive, augmentative, and frequentative suffixes and infixes. All of these can be stacked one upon the other, to produce multiple derivatives of a given word. Participles and other inflexional forms may also have a special connotation. While analyzing the lexical and syntactic structures of the two languages, we have come to the conclusion that the basic word order, both in Russian and Persian, is subject¬verb-object. But in Russian because the relations are marked by declension, a certain latitude is allowed, and all the permutations can be used. In this paper, we have shown that, a proper focus on contrast or difference makes it easier for Iranian students to learn and study.