cadet vs guidon

cadet

noun
  • A student at a military school who is training to be an officer. 

  • Junior. (See also the heraldic term cadency.) 

  • A younger or youngest son, who would not inherit as a firstborn son would. 

  • A young gentleman learning sheep farming at a station; also, any young man attached to a sheep station. 

  • A participant in a cadetship. 

guidon

noun
  • A soldier assigned to carry such a banner. 

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

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