The first five waterfalls by power (Guaíra, Khone Phapheng, Iguazú, Niagara, and Victoria) are called the Great Five Waterfalls.
The 5 Biggest and Best Waterfalls Around the World
Niagara Falls (USA and Canada, North America)
Angel Falls (Venezuela, South America)
Iguazu Falls (Argentina and Brazil, South America)
Victoria Falls (Zimbabwe, Africa)
Olo'upena Falls (Hawaii, USA)
For more information https://www.worldwaterfalldatabase.com/waterfall/Niagara-Falls-106