detour vs divagation

detour

noun
  • A diversion or deviation from one's original route. 

  • The diversion of the flow of execution for debugging or similar purposes. 

verb
  • To make a detour. 

  • To direct or send on a detour. 

divagation

noun
  • Straying off from a course or way. 

  • Incoherent or wandering speech and thought. 

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