bellflower vs carillon

bellflower

noun
  • A flower of one of these plants, which is shaped like a bell. 

  • Any flowering plants in the genus Campanula. 

  • Flowering plants in the genera, Campanulastrum, Codonopsis, or Platycodon, in the family Campanulaceae. 

  • Any flowering plant in genus Uvularia. 

carillon

noun
  • A tune adapted to be played by musical bells. 

  • A set of bells, often in a bell tower, sometimes operated by means of a keyboard (manual or pedal), originating from the Low Countries. 

verb
  • To play a carillon. 

  • To ring out like a carillon. 

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