This is the 6751st most frequent Swedish word.
nikolaj
"Nikolaj" is a Swedish male given name equivalent to "Nicholas" in English.
'Nikolaj' is used here as a proper noun, referring to a specific individual named Nikolaj.
Nikolaj är en mycket begåvad pianist.
Nikolaj is a very talented pianist.
'Nikolaj' again functions as a proper noun, this time describing a direct interaction with a person named Nikolaj.
Jag träffade Nikolaj i parken igår.
I met Nikolaj in the park yesterday.
'Nikolaj' here serves as a possessive proper noun, indicating ownership or association with an event, Nikola's concert.