This is the 9045th most frequent Korean word.
개최가
"개최가" does not appear to be a standard Korean word. It may be a typo or a combination of terms.
Here, '개최가' acts as the subject indicating that the event (film festival) is being hosted or held.
이 도시에서는 매년 국제 영화제가 개최가 됩니다.
In this city, the international film festival takes place every year.
In this case, '개최가' refers to the act of organizing and holding academic events up ahead.
그 학교는 다양한 학술 대회를 개최가 계획 중입니다.
That school is planning to host various academic conferences.
Here, '개최가' emphasizes the result or outcome of hosting as a noun referring to the event being conducted.