conspicuousness vs perspicuousness

conspicuousness

noun
  • Openness or exposure to the view; a state of being clearly visible. 

  • Eminence; celebrity; renown. 

  • The property of being clearly discernible by the mind; obviousness. 

perspicuousness

noun
  • The state or characteristic of being perspicuous; perspicuity. 

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