This is the 221st most frequent Serbian word.
никола
"Никола" is a Serbian proper noun, equivalent to the male given name "Nikola" in English.
Here, the word 'никола' is used as a proper noun, representing a person's name.
Никола је мој најбољи пријатељ.
Nikola is my best friend.
Here, 'Николом' is in the instrumental case, used to denote 'with Nikola.'
Разговарао сам са Николом о плановима за викенд.
I talked to Nikola about the plans for the weekend.
In this sentence, 'Николу' is the accusative form of the name Nikola, indicating the direct object of the action.