Nizhoní means beautiful and good. An example of this word in a sentence: Nizhoní go iina' a diilił - "Make a good life / You'll make a good life."
Hózhó is one of the most important words in the Diné language. It means beauty, not physically, but being in balance and harmony with everything around you. At the end of a prayer, Hózho náhásdlíí', or "it has become beauty again," is said four times. It can also be seen as the phrase Hózhó náshaa, or "I walk in beauty."