This is the 13503rd most frequent Korean word.
락앤락
"Lock & Lock" refers to a brand of airtight, durable food storage containers and kitchenware.
The term '락앤락' is used as the name of the container brand.
내 점심은 락앤락에 담겨있어요.
My lunch is stored in a Lock&Lock container.
Here, '락앤락' again refers to the brand name of the containers, emphasizing the object purchased.
엄마가 락앤락 통을 사왔어요.
My mom bought Lock&Lock containers.
In this sentence, '락앤락' represents the brand-integrated type of containers preferred for storage.