This is the 1547th most frequent Korean word.
국산
"Made in Korea" or "domestically produced."
국산 is used to refer to a domestically produced item, in this case, a car.
이 자동차는 국산이에요.
This car is domestically produced.
국산 emphasizes the domestic origin of the fruits consumed.
저는 국산 과일만 먹어요.
I only eat domestically produced fruits.
국산 highlights the overall domestic manufacturing reputation.