Change in the end of nouns in Arabic and Russian language and compared to French and German languages: A research study

Examining the grammar and rules between Arabic and Russian, many similarities can be seen in the rules of these two languages. In a logical study, the late changes of Arabic and Russian nouns in sentences; The functional similarities of Arab in Arabic and (падеж) in Russian are quite obvious, it means that both of theme define the role of words in combinations and sentences, and in both languages to identify the role of words in sentences, this feature can be used. But this phenomenon is not seen in French and German language, and in this article it is assumed that Arab or late word changes in sentences are a kind of instrument that is not only in Arabic, but other languages as well as Russian use this tool. But this tool is not used in other languages such as French and German. . Although there are structural similarities between the rules of these two languages and Arabic, but these two languages use other tools to identify the role of words in sentences, and this difference has been examined with logical reasoning. Finally, this logical reasoning has been proved by the method of new logic; and also the correctness of the result or reasoning has been expressed in the space of Tarski's theory of truth, and according to Tarski's theory, the result of the reasoning has been true.