This is the 16976th most frequent Korean word.
상인들은
"Merchants" or "traders."
Here, the word "상인들은" functions as the subject of the sentence, specifying the group of people ('merchants') performing the action ('selling').
상인들은 시장에서 물건을 판매합니다.
The merchants sell goods at the market.
In this sentence, "상인들은" again acts as the subject, focusing on their typical activity ('changing prices').
상인들은 물건의 가격을 자주 변경합니다.
Merchants frequently change the prices of goods.
In this sentence, "상인들은" is used as the subject, describing their conduct ('treating customers kindly').