flexion vs windiness

flexion

noun
  • The state of being bent or flexed. 

  • Deviation from straightness. 

  • The act of bending a joint, especially a bone joint; the counteraction of extension. 

windiness

noun
  • The state of being winding or twisting; twistiness 

  • The state of being windy; the state of there being wind 

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