This is the 1152nd most frequent Korean word.
보인
"보인" means "shown" or "visible."
The word '보인다' is used to describe perception, emphasizing how something appears visually.
그녀의 미소는 너무 아름답게 보인다.
Her smile looks so beautiful.
In this usage, '보였다' conveys a brief visual expression or appearance.
부끄러워서 그의 얼굴에 살짝 보였다.
He appeared slightly shy on his face.
Here, '보인다' represents an inferred understanding or interpretation based on the information given.