Niagara vs plethora

Niagara

noun
  • A flood, torrent, or outpouring, especially one of massive proportions. 

  • A Niagara grape. 

name
  • A regional municipality on the Niagara Peninsula, southern Ontario, Canada, colloquially known as the Niagara Region. 

  • A ghost town in Western Australia. 

  • A river (the Niagara River) which flows from Lake Erie, over Niagara Falls into Lake Ontario; the geographical region of the United States and Canada in proximity to this river. 

  • A city and town in Wisconsin. 

  • The Niagara Falls. 

  • A town in New York. 

  • A city and village in North Dakota. 

  • A ghost town in British Columbia, Canada. 

plethora

noun
  • An excessive amount or number; an abundance. 

  • Excess of blood in the skin, especially in the face and especially chronically. 

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