ТЕОРЕТИКО-МЕТОДОЛОГІЧНІ ЗАСАДИ ЕПТОНІМІВ ТА їХ ДИФЕРЕНЦІЙНІ ОЗНАКИ СУМІЖНИХ КАТЕГОРІЙ

The article deals with some theoretical and methodological principles of eptonyms, and it was determined differential features of eptonyms from other related categories in the Ukrainian and English languages. Relevance of the article is determined with necessity to highlight a status of eptonyms in English, which are often called as “winged words”. A goal of the article is to create an integral conception which can disclose a modification and transformation of these units, to understand the difference between related categories. An object of the article is to describe theoretical issues which arise while studying eptonyms and related to them derivative categories well-known by the linguists. Such category as «eptonyms» is well studied in Ukrainian, but worth studying in English. It is not still regarded as an independent object of research and any theoretical work has not been found. Thus, such research will help in further studying of related categories and, moreover, help to avoid ambiguity. Grounding of advisability for introducing such a category as «eptonyms» into English is also considered and can become an innovation for Anglo-Saxon linguistics.