Scout's honor vs honestly

Scout's honor

noun

  • The oath taken by Boy Scouts or Girl Scouts. 

intj

  • Any promise or oath. 

honestly

intj

  • Used to express exasperation, dismay, etc. 

adv

  • In an honest manner. 

  • Frankly, to be honest. 

How often have the words Scout's honor and honestly occurred in a corpus of books? (source: Google Ngram Viewer )