It is known that the basis of any corpus is its units. Typically, texts of different genres are selected as the corpus unit to ensure the representativeness of the corpus. Therefore, when creating any language corpus, first of all, the principles of selection of texts that are part of it should be defined. Parallel corpus units consist of texts that have been translated one or more times from the original. Which topic and genre text to choose for the parallel corpus is determined by the purpose of the compiler?