poem vs quadruplet

poem

noun
  • A literary piece written in verse. 

  • A piece of writing in the tradition of poetry, an instance of poetry. 

  • A piece of poetic writing, that is with an intensity or depth of expression or inspiration greater than is usual in prose. 

quadruplet

noun
  • A tuplet of four notes. 

  • One of a group of four, particularly one of four babies born from the same mother during the same birth. 

  • A sequence of four elements. 

  • A cycle for carrying four riders, arranged so that all the riders can assist in the propulsion. 

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