This bachelor thesis presents the issue of slang in the tram transport environment in the transit company of Brno and Ostrava. The aim of the thesis is through a questionnare survey to collect and subsequently analyse the expressions currently used in these environments. The methodology of the work and the research assumptions that will be used are described in the introduction. The theoretical part focuses on the stratification of the Czech language, a general description of slang based on the professional literature, and the ways of creating slang terms. At the end of this section, we characterize the slang environments and briefly describe the typical features of the Central Moravian and Silesian dialects, to which these regions geograph...