fineness vs robustness

fineness

noun
  • The quality or degree of being fine. 

  • The ratio of length to width of a ship, aircraft or rocket 

  • The ratio, in a precious metal, of the primary metal to any additives or impurities. 

robustness

noun
  • The quality of being robust. 

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