banderole vs guidon

banderole

noun
  • A little banner, flag, or streamer. 

  • A flat band with an inscription, common in Renaissance buildings. 

guidon

noun
  • A small pennant or banner carried by infantry soldiers to direct troop movement. 

  • A soldier assigned to carry such a banner. 

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