To the question of differentiation of terms last name and family name in anthroponymy

The article are considered some of the results of a study on the development and formation of kinship terms in anthroponymic science. The issue of distinguishing between a surname and a family name is relevant for the period of the XVII, XVIII, early XIX centuries, since the differentiation of lexemes (assignment to a family name or surname) presenting the naming of persons in historical documents is difficult. The author proposes approaches to the classification of kinship terms presented by leading anthroponymist scientists. The article presents different approaches to the classification of anthroponymic material: semantic and word-forming. The author analyzes the main trends in the use of the surname using the example of a male and female names.