legend vs tenson

legend

noun
  • A musical composition set to a poetical story. 

  • An inscription, motto, or title, especially one surrounding the field in a medal or coin, or placed upon a heraldic shield or beneath an engraving or illustration. 

  • A plausible story set in the historical past, but whose historicity is uncertain. 

  • The design and specification of a vessel. 

  • A person with legend-like qualities, such as extraordinary accomplishment. 

  • A fabricated backstory for a spy, with associated documents and records. 

  • A story in which a kernel of truth is embellished to an unlikely degree. 

  • A leading protagonist in a historical legend. 

  • A key to the symbols and color codes on a map, chart, etc. 

  • A cool, nice or helpful person, especially one who is male. 

  • A story of unknown origin describing plausible but extraordinary past events. 

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 legend and tenson occurred in a corpus of books? (source: Google Ngram Viewer )