cataract vs tidewater

cataract

noun
  • A flood of water. 

  • A clouding of the lens in the eye leading to a decrease in vision. 

  • A large waterfall; steep rapids in a river. 

  • An overwhelming downpour or rush. 

tidewater

noun
  • Water affected by the flow of the tide, especially tidal streams. 

  • The seaboard. 

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