This is the 5311th most frequent Swedish word.
elin
"Elin" is a Swedish female given name, equivalent to "Ellen" or "Helen" in English.
The word 'Elin' is used as a proper noun (a name) referring to a specific individual.
Elin är min bästa vän.
Elin is my best friend.
The word 'Elin' remains a proper noun identified as the subject performing the action of borrowing.
Har du sett boken som Elin lånade?
Have you seen the book Elin borrowed?
Here, 'Elin' is addressed directly in the form of vocative use, as someone the speaker is requesting assistance from.