Classification criteria of concepts in art. 5 of the RF CPC

The article deals with the problem of classification of concepts confirmed in the Criminal Procedure Code of the Russian Federation. The author as directed to the lack of the unified approach of the legislator to decide where there should be the definition of the relevant concepts, comes to the conclusion that the legislator is inconsistent in the use of code defining methods. On the basis of the research conducted the author proposes her own vision of the foundations for the classification of the concepts confirmed in Article 5 of the Criminal Procedure Code.