artlessness vs coarseness

artlessness

noun
  • the state or quality of being artless 

  • the state or quality of being innocent; naïveté 

coarseness

noun
  • The quality or state of being coarse 

  • The property of being coarse, roughness or primitiveness, unrefined or unpolished. 

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