brook vs undergo

brook

verb
  • To bear; endure; support; put up with; tolerate. 

noun
  • A water meadow. 

  • Low, marshy ground. 

  • A body of running water smaller than a river; a small stream. 

undergo

verb
  • To suffer or endure; bear with. 

  • To experience; to pass through a phase. 

  • The project is undergoing great changes. 

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