pertinaciousness vs pusillanimity

pertinaciousness

noun
  • The state or characteristic of being pertinacious. 

pusillanimity

noun
  • The quality or state of being pusillanimous; the vice of being timid and cowardly, and thus not living up to one's full potential; pusillanimousness. 

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