Stories of man and his real world inhabited by surreal beings (unreal world) have been recorded and researched from the standpoint of ethnography as a part of folk culture, from the standpoint of folkloristics as a part of narrative tradition for a long time. A wide array of multi-genre material belongs to this topical scope. It is on one side frequented in narrative tradition, on the other doesn’t always accomplish many ambitions of the esthetical side of the text (in comparison with the highly poetic magical tale). Without a doubt, this fact has affected on the publication of demonological narratives and their full establishment in editorial practice in older times. One of the many problems, which a researcher must face, when studying this scope of verbal tradition, is the fact that until now demonological tales in Slovakia aren’t compiled systematically and evaluated. Another issue during the research process is the terminological diversity and ambiguity in the definition of genres of mythological texts. This type of text with mythological and demonological elements is perceived in Slovak scientific literature as a part of a wider scope of folk prose and is known under various names as superstitious narrative, superstitious novel, demonological legend or demonological tale. The authoress of the paper points out the terminological ambiguity of the definition of genres of a wide range of diverse mythological narratives, which have specific definitions within their individual genre groups in genological systems of other nations (e.g. in the Russian context the so-called bailichka, byvalschina).