This is the 8093rd most frequent Polish word.
norsk
The Polish word "norsk" means "Norwegian" in English.
In this sentence, 'norsk' is used as a noun referring to the Norwegian language.
Studenci uczą się języka norsk w swojej klasie.
The students are learning the Norwegian language in their class.
Here, 'norsk' functions as an adjective describing the nationality of the friend.
Mój przyjaciel jest norsk, więc rozmawiamy często po norwesku.
My friend is Norwegian, so we often talk in Norwegian.
Though 'norsk' isn't directly used here, 'norweskie' (Norwegian) is linguistically related and exemplifies adjectival usage to describe noun characteristics.