brook vs muskeg

brook

noun
  • A water meadow. 

  • Low, marshy ground. 

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

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

muskeg

noun
  • A terrain composed of peat bog with tussocky meadow and woody vegetation including spruce. 

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