brook vs rivulet

brook

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

  • A water meadow. 

  • Low, marshy ground. 

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

rivulet

noun
  • A small brook or stream; a streamlet; a gill. 

  • Perizoma affinitatum, a geometrid moth. 

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