This is the 2701st most frequent Korean word.
실종된
"Missing" or "lost."
In this sentence, '실종된' (missing) is used as an adjective describing the puppy that has gone missing.
실종된 강아지를 찾으러 공원에 갔어요.
I went to the park to search for the missing puppy.
Here, '실종된' modifies '소녀' (girl) to emphasize that she was unaccounted for before being found.
실종된 소녀는 이웃 마을에서 발견되었어요.
The missing girl was discovered in the neighboring village.
The term '실종된' is associated with '고양이' (cat) to convey its missing status prior to being located.