confusedness vs misunderstanding

confusedness

noun
  • The state or quality of being confused. 

misunderstanding

noun
  • A mistake as to the meaning of something or a specific point of view; erroneous interpretation or comprehension; misconception. 

  • A disagreement; difference of opinion; dissension; quarrel. 

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