The paper deals with the problems of terminology and classification of folk beliefs. The author shows that relevant terminology used by the Slovak scholars is unstable and rather intuitive. Few years ago a new proposal for classification of the folk beliefs came out from the field of religious studies. Basing on the fuzzy set theory, the author claims that the social and cultural categories do not need the sharp boundaries. He confronts the new classification with the theories of cognitive science of religion, in particular with the cognitive theory of Pascal Boyer and the theory of the religious modes of Harvey Whitehouse.
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