derangement vs lucidity

derangement

noun
  • An act or instance of deranging. 

  • A permutation of a set such that no element is in its previous position. 

  • The property of being deranged. 

lucidity

noun
  • The state of being aware that one is dreaming, i.e. being in a lucid dream. 

  • The property of being lucid, lucidness. 

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