Purpose: The main aim of this article is to specify the methodological aspects in creating a bilingual Polish-Ukrainian terminological dictionary in the field of management communication. In the case of the mentioned bilingual dictionary, the task is also to emphasize similarities and differences in defining terms, and to introduce a new meaning of the term into the thesaurus of those two languages of neighbouring countries. Design/Methodology/Approach: In the article, the authors used descriptive analysis and are trying to find common conditions that can explain the chosen outcome of the terminological dictionary. Findings: The authors of this dictionary found out that there is a need for systematization and ordering of communication terminology in the field of management. This led to collecting and comparing the publication base of two cultural ethnoses--Polish and Ukrainian--in the field of communication in management and thus creating a mechanism for modifying the terminology for the development of the discipline 'Communication in management'. Practical Implications: The need for introducing this bilingual Polish-Ukrainian dictionary appears with wider expansion of cooperation between the two neighbouring countries. This cooperation is visible nowadays not only in the professional, but also in the academic niche. Originality/Value: The article discusses the creation of the first such bilingual, terminological dictionary in the field of management communication that can be used internationally. Keywords: Terminology database, communication in management, terminology tree, terminography, dictionary in management. JEL Classification: M2, D82. Paper Type: Research article.