stanza vs tenson

stanza

noun
  • A unit of a poem, written or printed as a paragraph; equivalent to a verse. 

  • An XML element which acts as basic unit of meaning in XMPP. 

  • An apartment or division in a building. 

  • A segment; a portion of a broadcast devoted to a particular topic. 

  • A period; an interval into which a sporting event is divided. 

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