The present Master thesis deals with the study of somatic idioms which contain the lexeme ruka ("mano") in Czech and Spanish language. The goal of this work is to analyse the metaphors and metonymies that are present in the studied phraseological units and to compare their distribution in the languages that are studied. The work is divided into a theoretical part, whose chapters contain the explanation of crucial concepts in the field of phraseology, the relation between language and cognition, basic principles of cognitive linguistics and a view on teaching of phraseology. The subject of the second, practical, part is the list of the metaphors and metonymies present in studied units and their detailed description. The practical part also contains a contrastive analysis of the results between Czech and Spanish with the focus at the similarities and differences. The work is written in Spanish and contains Czech summary.