social skill vs sophistication

social skill

sophistication

noun
  • Ability to deal with complexity. 

  • Enlightenment or education. 

  • Cultivated intellectual worldliness; savoir-faire. 

  • Deceptive logic; sophistry. 

  • Falsification or contamination. 

  • Complexity. 

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