flood tide vs high water

flood tide

noun
  • The period between low tide and the next high tide in which the sea is rising. 

  • The highest point of something; a climax. 

high water

noun
  • The state of the tide when the water is at its highest. 

  • The highest stage of a river. 

  • The location of high tide on a coastal area. 

How often have the words flood tide and high water occurred in a corpus of books? (source: Google Ngram Viewer )