This is the 16083rd most frequent Korean word.
분실물
Lost item.
The word '분실물' refers to 'lost item' as a general noun, indicating items that were lost.
분실물 센터에 가면 잃어버린 물건을 찾을 수 있습니다.
If you go to the lost and found center, you can find lost items.
Here, '분실물' refers to a specific lost item that has been found, used as a specific noun.
역무원이 분실물을 찾아서 주인에게 돌려줬어요.
The station employee found the lost item and returned it to its owner.
In this sentence, '분실물' refers to multiple lost items in a plural context.