conspicuousness vs patency

conspicuousness

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

  • Eminence; celebrity; renown. 

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

patency

noun
  • Obviousness; clarity. 

  • The condition or state of being patent. 

  • The degree of openness (of a tube, such as a blood vessel or catheter); the relative absence of blockage or obstruction. Measured in percent. 

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