This is the 7722nd most frequent Korean word.
프로배구
Professional volleyball.
In this sentence, '프로배구' refers to professional volleyball as a sport or event watched.
나는 주말마다 프로배구 경기를 봐요.
I watch professional volleyball games every weekend.
Here, '프로배구' is used to specify the professional nature of the volleyball tournament being discussed.
이번 시즌 프로배구 대회가 정말 치열할 거예요.
This season's professional volleyball tournament will be very intense.
In this sentence, '프로배구' refers to the domain or category of professional volleyball when talking about players.