Difference between fruit and leaf in Korean
열매·잎

열매fruit
열매 is the fruit of a plant or tree, often with seeds inside. You can use it for things like apples, berries, or other plant fruit in nature. It is common when talking about trees, flowers, farms, and the outdoors.

잎leaf
A leaf is the flat green part of a plant or tree. In Korean, 잎 means one leaf, and it is used when talking about plants, flowers, or trees. You can use this word to describe color, size, or movement of leaves in nature.
The difference
잎 is a leaf, the flat green part of a plant. It is not the seed-bearing fruit part.