complexity vs contortion

complexity

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

  • The state of being complex; intricacy; entanglement. 

contortion

noun
  • The act of contorting, twisting or deforming something, especially oneself. 

  • A form of acrobatic display which involves the dramatic bending and flexing of the human body. 

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