complexity vs easiness

complexity

noun
  • That which is and renders complex; intricacy; complication. 

  • The state of being complex; intricacy; entanglement. 

easiness

noun
  • Looseness or pliancy, often derogatory 

  • Freedom from inhibition and awkwardness: grace. 

  • Lack of harshness: gentleness, kindness. 

  • Freedom from discomfort and worry: comfort. 

  • Lack of concern or care: carelessness, indolence. 

  • Lack of difficulty; quality of not being frustrating, difficult, or dense (compact). 

  • Lack of firm conviction: gullibility, credulity. 

  • Lack of difficulty or trouble: facility; simplicity. 

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