This is the 6544th most frequent Turkish word.
arabuluculuk
Mediation.
Here, "arabuluculuk" is used to describe the general concept of mediation as a method to assist in resolving conflicts.
Arabuluculuk, taraflar arasındaki anlaşmazlıkları çözmeye yardımcı olur.
Mediation helps resolve disputes between parties.
In this sentence, "arabuluculuk" refers to the act performed by the brother to mediate between his friends.
Kardeşim arabuluculuk yaparak arkadaşları arasındaki sorunu çözdü.
My brother mediated and solved the issue between his friends.
Here, "arabuluculuk" is used to emphasize its significance in fostering peace and harmony among people.