The installation research project Dynamicity of Specialized Knowledge Categories (DIKA) is based on theoretical research of terminological units and specialized knowledge categories at conceptual and linguistic levels, syntactic and semantic analyses of the syntagmatic term relations, as well as theoretical research of the communicative functions of terms in discourse based on examples from the domains of aviation, law, marketing and karstology. Attention is also given to the research of phraseological terminological units and the role of figurativeness in the construction and expression of a specialized meaning. This will provide an insight into the categories of different fields, and confirm the assumption that semantic frames are an appropriate way to present the dynamicity of conceptual relations in the categories of specialized knowledge.