Introduction. There is a relationship between the motivating signs of the macroconcept mother and its symbolic signs ('Mother of God', 'earth', 'breeding bee (queen)', 'beginning', 'reason', 'source') and motivating signs of the concept son ('pregnancy', 'having the closest relationship with something', 'younger prince (in relation to the grand duke)', 'descendant', 'child / person', 'childbirth', 'give birth / produce / procreate', '(by) born', 'fruit', 'originat-ing from someone or something'; '(second) hypostasis of the Trinity', 'spiritual son'). The scientific novelty of the work consists in the first experience of addressing the conceptualization of the blood relationship between mother and son in Russian linguistic culture. The main purpose of the article is to describe the signs of the con-ceptualization of consanguinity, namely, maternal-filial relationships in Russian linguoculture. Objectives of the article: 1. to identify the three fixed spheres of explication of conceptual signs of mother and son; 2. to iden-tify ways of objectification of the corresponding three levels of cognitive signs. Research methods and materi-al. The article uses a complex of methods of linguistic analysis: descriptive, interpretive, conceptual, the method of analyzing dictionary definitions. This complex allows to solving the tasks set by the authors of the article. The research material was taken from the National Corpus of the Russian Language (www.ruscorpora.ru). The cor-pus produces 11081 contexts (10075 for the word mother and 1006 for the word womb – the two main repre-sentatives of the macroconcept mother. For the main representative of the concept son – the word son – the corpus gives out 15,878 contexts. Conclusion. Actualization of mother and son conceptual signs occurs at three levels of perception of this sphere of life: 1. Mundane; 2. Divine (sacred); 3. Desacralized (depreciated, ironic).