This is the 2952nd most frequent Turkish word.
sırp
Serb (a person from Serbia or of Serbian descent).
In this sentence, 'Sırp' is used as an attributive adjective describing the nationality of the friend, indicating Serbian origin.
Sırp arkadaşım hafta sonu İstanbul'a geliyor.
My Serbian friend is coming to Istanbul this weekend.
Here, 'Sırp' serves as an adjective modifying 'Krallığı' to denote a kingdom associated with Serbia, focusing on its cultural identity.
Tarih dersinde bugün Sırp Krallığı'nı inceledik.
In history class today, we studied the Kingdom of Serbia.
Finally, in this example, 'Sırpça' refers to the Serbian language, showing its usage as a noun to represent a language.