The monograph is devoted to the use of language in different spheres of communication, and language functioning in normal adult life in public relations official in admionistrativě in the professional sphere, in communication and language education at school (from the perspective of teacher and pupil). Interpretations are aimed at different language levels, the vocabulary, morphology and syntax syntagmatiku and the use of phraseology in komunikaci.Všechny interpretations are based on the author's own research.