This is the 1383rd most frequent Swedish word.
tobias
"Tobias" is a male given name in Swedish.
This shows the name 'Tobias' used as a proper noun, which is typically a personal name.
Tobias är min vän som bor i Stockholm.
Tobias is my friend who lives in Stockholm.
Here 'Tobias' is used as a possessive noun indicating ownership or association (Tobias's story).
Vi såg en film baserad på Tobias berättelse.
We watched a movie based on Tobias's story.
In this usage, 'Tobias' is referenced as a name itself, usually mentioned or heard in speech.