detour vs divergence

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. 

divergence

noun
  • The degree to which two or more things diverge. 

  • The process in which two or more populations accumulate genetic changes (mutations) through time. 

  • the operator which maps a function F=(F₁, ... Fₙ) from a n-dimensional vector space to itself to the function ∑ᵢ₌₁ⁿ(∂F_i)/(∂x_i) 

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