Nizhny Novgorod vs Nizhni Novgorod

Nizhny Novgorod and Nizhni Novgorod both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nizhny Novgorod	Yes	No	No	No
Nizhni Novgorod	Yes	No	No	No

As nouns, Nizhny Novgorod and Nizhni Novgorod are synonyms defined as:

Nizhny Novgorod and Nizhni Novgorod: an industrial city in the European part of Russia; birthplace of Maksim Gorky

Other synonyms of Nizhny Novgorod include Gorki, Gorkiy, Gorky, Nizhnyi Novgorod.

Nizhny Novgorod (noun)	Nizhni Novgorod (noun)
an industrial city in the European part of Russia; birthplace of Maksim Gorky	an industrial city in the European part of Russia; birthplace of Maksim Gorky