Questions & Answers about Vennskap er viktig for min mentale helse.
In Norwegian, general statements about abstract or uncountable things often use no article.
- Vennskap er viktig ... = Friendship is important ... (friendship in general)
- Similarly: Vann er nødvendig. = Water is necessary.
You would only use an article if you were talking about a specific friendship:
- Det vennskapet vi har, er viktig. = That friendship we have is important.
So in your sentence, vennskap is used in a general, abstract sense, so there is no article.
In this sentence, vennskap is singular and uncountable, referring to the concept of friendship.
There is a plural form vennskap / vennskapene, but it’s mostly used when you really want to talk about separate individual friendships:
- Jeg har mange nære vennskap.
I have many close friendships.
In everyday speech, Norwegians often keep it in the singular, even when English might use a plural:
- Vennskap er viktig. (Singular, general)
- Friendships are important. (Plural in English)
So your sentence uses vennskap in the general, uncountable sense.