This is the 17340th most frequent Korean word.
선봉
"선봉" means "vanguard" or "frontline leader."
선봉 is used here to mean 'taking the lead or vanguard position' in advocating for a policy.
그는 새로운 정책을 주장하며 선봉에 섰다.
He led the charge by advocating for the new policy.
선봉 in this context means 'the front or leading group' in a mountain expedition.
산악 탐험대는 선봉에 경험 많은 등산가를 배치했다.
The mountain expedition placed experienced mountaineers in the vanguard.
선봉 refers to being at the 'forefront or leading position' in scientific research.