EN
The core of this article comprises material from The Slavic Linguistic Atlas which will serve to create two separate maps for the 9th volume of the lexical word-formation series of the Atlas entitled Man. The material was gathered according to the Atlas questionnaire and it covers the terms: L 1384 'rot' (mouth) and L 1388 'guby' /N pl/ (lips). The data bears etymological relation close enough to be presented in its entirety, with lexical units of the same origin grouped. The maps of the Atlas allow for a more precise definition of the domains of many linguistic phenomena. Lexemes covering the notions of 'outh' and 'lips' belong to basic vocabulary. Hence, conclusions drawn from etymological and geographical analysis of their differentiation allow - only to a certain degree and in a limited range - to define mutual linguistic relations.