rhapsody vs tenson

rhapsody

noun
  • An epic poem, or part of one, suitable for uninterrupted recitation. 

  • An exaggeratedly enthusiastic or exalted expression of feeling in speech or writing. 

  • An instrumental composition of irregular form, often incorporating improvisation. 

verb
  • Followed by about, on, over, or upon: to speak with exaggerated or rapturous enthusiasm. 

  • To say (something) with exaggerated or rapturous enthusiasm. 

tenson

noun
  • A form of lyric poem used by troubadours in Provençal in which two voices present different sides of an argument, in alternate stanzas, lines, or groups of lines with identical structure. 

How often have the words rhapsody and tenson occurred in a corpus of books? (source: Google Ngram Viewer )