This is the 8970th most frequent Korean word.
개막과
"개막과" is not a standard Korean word. It may be a typo or misinterpretation.
In this sentence, '개막과' (geomag-gwa) references the opening event ('개막') combined with the connector '과', meaning 'and', to link it to subsequent descriptions.
이번 올림픽의 화려한 개막과 함께, 전 세계의 이목이 집중되었습니다.
With the grand opening of this year's Olympics, the world's attention was drawn.
Here, '개막과' emphasizes the commencement of the lecture ('개막'), immediately followed by the audience's reaction, demonstrating causality.
강연의 개막과 동시에 청중들이 환호성을 질렀다.
Simultaneously with the opening of the lecture, the audience cheered.
In this use, '개막과' specifies the commencement of the year-end event ('개막') and associates it with several linked elements ('관련된') to describe prepared activities.