pertness vs shyness

pertness

noun
  • The quality of being pert; cheekiness, impudence. 

  • The quality of being pert; firmness (usually of breasts). 

shyness

noun
  • The quality of being shy; a fear of social interactions. 

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