This is the 16991st most frequent Korean word.
상점에서
"At the store" or "in the store."
In this usage, '상점에서' shows the location of the social interaction ('met a friend').
우리는 상점에서 친구를 만났다.
We met a friend at the store.
In this sentence, '상점에서' specifies the location where the verb ('bought') took place.
나는 상점에서 과일을 샀다.
I bought fruits at the store.
Here, '상점에서' indicates the place where the action ('observing items') is occurring.