This is the 16594th most frequent Russian word.
север
"North"
Here, 'север' denotes a geographic region, specifically the northern part of Russia, used as a noun.
Север России известен своими суровыми зимами.
The north of Russia is famous for its harsh winters.
'север' is used to describe the direction of the north as a physical location, functioning as a noun.
Мы отправились на север, чтобы увидеть полярное сияние.
We traveled to the north to see the northern lights.
In this sentence, 'север' is part of the adjective 'северных,' describing the location characteristics in terms of being northern.