This is the 2892nd most frequent Swedish word.
cornelia
"Cornelia" is a Swedish female given name, derived from Latin, with no specific meaning other than being a proper name.
Here, 'Cornelia' is a proper noun, indicating the name of a person being discussed.
Cornelia är en mycket begåvad musiker.
Cornelia is a very talented musician.
In this sentence, 'Cornelias' is the possessive form of 'Cornelia', showing ownership or attribution to her concert.
Vi såg Cornelias konsert igår kväll.
We watched Cornelia's concert last night.
The word 'Cornelia' here again is used as a proper noun, referring to the individual considered in the opinion being expressed.