This is the 8537th most frequent Russian word.
нягани
"Нягани" is not a word but resembles "Нягань," the name of a town in Russia.
In this sentence, 'Нягани' indicates the locative case of the city name 'Nyagan', used to show the place of residence.
Я уже второй год живу в Нягани.
I have been living in Nyagan for the second year now.
Here, 'Нягань' is in the accusative case, indicating motion towards the location.
Мы поедем в Нягань на следующей неделе.
We will go to Nyagan next week.
In this case, 'Нягани' denotes the genitive case, indicating possession or relation, as in 'the history of Nyagan'.