Difficulties in interpretation of a song context for the dictionary

A song frequently is a message about an invented or ritual event. In the latter case, its perception depends on the folk rhetorical tradition; heroes and objects have acquire predetermined and therefore unverifiable properties. The high level of redundancy of the message and the automatic nature of the performance of folk foster preservation of obsolete words or distortion of words, which, as a rule, maintain the same number of syllables. Historical commentary explaining their usage can supply the additional information for a lexicographic description of rare words.