About the book: 2016 / The monograph discusses transitional units that occupy an intermediate position between vocabulary and grammar, between different grammatical levels, possessing opacity of form and non-compositionality of content, which do not fit into traditional linguistic classifications. The authors consider the processes of idiomatization to be the reason for the appearance of such transitional units. The study emphasizes that idiomatization is one of the constant and most important processes of conventionalization of speech flow by the language community. The results of this process are manifested in a huge number of half-formed fragments and the blurring of boundaries between linguistic levels. Speech units at the boundaries of these levels are the main object of description in this book.