equivocality vs lucidity

equivocality

noun
  • The quality of being equivocal. 

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 equivocality and lucidity occurred in a corpus of books? (source: Google Ngram Viewer )