disturb vs enlighten

disturb

verb
  • to confuse a quiet, constant state or a calm, continuous flow, in particular: thoughts, actions or liquids. 

  • to divert, redirect, or alter by disturbing. 

  • to have a negative emotional impact; to cause emotional distress or confusion. 

enlighten

verb
  • To make something clear to (someone); to give knowledge or understanding to. 

  • To supply with light. 

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