aptness vs awkwardness

aptness

noun
  • proneness; tendency 

  • disposition of the mind; propensity 

  • suitability; the quality of being apt or suitable 

  • speed or readiness in learning; docility 

awkwardness

noun
  • The state or quality of being awkward; clumsiness; unskillfulness. 

  • The quality of an embarrassing situation. 

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