This is the 2nd most frequent Norwegian word.
av
"Av" in Norwegian means "of" or "from."
Here, "av" is used to indicate the creator or origin of something.
Jeg kjøpte en bok av forfatteren.
I bought a book by the author.
Here, "av" expresses the cause or reason for the feeling.
Han er stolt av arbeidet sitt.
He is proud of his work.
Here, "av" indicates a part of a whole.