This is the 2065th most frequent Swedish word.
andrej
"Andrej" is not a Swedish word but a Slavic male given name used in various languages.
Here, 'Andrej' is used as a proper noun referring to a person, specifically the subject of the sentence.
Andrej läser en bok.
Andrej is reading a book.
In this context, 'Andrej' remains as a proper noun representing the individual whom the action is directed towards.
Vi träffade Andrej på festen.
We met Andrej at the party.
'Andrej' is utilized as the subject performing an action along with another entity.