The author of the article had not noticed any interrelation between Lexicon Slavo-Ruthenicum and Nomenklator of Elijah Kopijewski, published in 1700 in Amsterdam. He wrote about this in his earlier papers as well as in the Introduction to Lexicon Slavo-Ruthenicum, published in 2013. Although the author drew attention to the presence in both sources enigmatic lexical unit варадомаи‘carrus; Karren’, which wasn’t noticed anywhere else. The purpose of this paper is completed and conclusive research of the dependency or interrelation between these two dictionaries. Therefore thorough and systematic compilation and comparison of analysed material – letters a of vocabulary of Nomenclator with the relevant vocabulary in Lexicon Slavo-Ruthenicum is presented in this article. The analysis shows, that there is interrelation between mentioned lexicographical sources. Most probably the author of Lexicon Slavo-Ruthenicumused Nomenclator (1700) and inserted most of its vocabulary (letters: a – o) in his manuscript lexicon.