This is the 6th most frequent Swedish word.
av
"Av" in Swedish means "of," "by," "from," or "off," depending on context.
Here, 'av' indicates authorship, showing who created the item.
Jag köpte en bok av författaren.
I bought a book by the author.
This usage of 'av' conveys derivation or source, denoting the origin of the learning experience.
Hon lärde sig mycket av resan.
She learned a lot from the journey.
'Av' in this sentence expresses composition, specifying the substance the object is made from.