The article is devoted to the consideration of the typology of special vocabulary in the modern language of technology and the study of the proportion of functional and stylistic types of special lexical units (terms, nomens, pragmonyms, terminoids, professionalisms) in scientific and technical texts of various genres. To study the ratio of the types of special vocabulary, popular scientific articles from aviation electronic journals, individual chapters of Ph.D. theses as well as fragments of aviation textbooks in English and German were analyzed. The total volume of the studied texts is 180, 000 characters (30,000 characters for each genre in one language). Based on this material, 2,426 English special lexical units and 2,465 German special lexical units were identified and distributed into separate categories. As a result of the study, it was found that the proportion of types of special vocabulary in scientific and technical texts of the corresponding genres in English and German is approximately the same. In all analyzed popular science, scientific and educational texts, the proportion of terms considerably prevails. The largest number of terms is used in educational texts. In popular science texts, nomens are used more often than in texts of other genres. Terminoids and professionalisms are very rarely used in the studied texts.