Noun niagara falls has 2 senses
  1. Niagara, Niagara Falls - waterfall in Canada is the Horseshoe Falls; in the United States it is the American Falls
    --1 is a kind of waterfall, falls
    --1 is a part of
     Niagara, Niagara River; Ontario; New York, New York State, Empire State, NY
    --1 has parts: American Falls; Canadian Falls, Horseshoe Falls
  2. Niagara Falls - a city in western New York State at the falls of the Niagara river; tourist attraction and honeymoon resort
    --2 is a kind of
    city, metropolis, urban center
    --2 is a part of New York, New York State, Empire State, NY
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