The article defines the need to create a terminological base for the theory and practice of forensic examination. It is analyzed methodological approaches to the definitions of the terms “feature”, “property”. Based on the analysis of scientific approaches, the concepts of “feature” of an object and “property” of an object have been formed. It is proposed to classify “properties” into specific, group and general. There are given expediency and legitimacy of the differentiation of the terms “feature” and “property” in the theory of forensic examination. The author’s position on the differentiation of these concepts is proposed.
The author proposes to investigate the structure of objects to clarify the nature of the “properties” and “features” of objects of forensic examination. In order to clarify the nature of “properties” and “features” of objects of forensics, directly, how they are established and what its value is in expert knowledge.
The peculiarities of the method of establishing “features” and “properties” of objects of objects of forensic examination that consists of sequential practical and mental operations, stages, stages of expert knowledge, have been investigated.
Key words: forensic examination, identification, features of objects, properties of objects, structure of objects, elements of objects, expert knowledge, expert research.