clarity vs complexity

clarity

noun
  • The ability to be easily understood. 

  • The state or measure of being clear, either in appearance, thought or style; lucidity. 

complexity

noun
  • That which is and renders complex; intricacy; complication. 

  • The state of being complex; intricacy; entanglement. 

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