lucidity vs weakness

lucidity

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

  • The property of being lucid, lucidness. 

weakness

noun
  • An inadequate quality; fault 

  • The condition of being weak. 

  • A special fondness or desire. 

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