Sweet melon and Winter melon

Sweet melon noun - Any of several varieties of vine whose fruit has a netted rind and edible flesh and a musky smell.

Winter melon and sweet melon are semantically related. In some cases you can replace phrase "Winter melon" with "Sweet melon", this phrases are similar.

Winter melon noun - Any of a variety of muskmelon vines having fruit with a smooth white rind and white or greenish flesh that does not have a musky smell.

Sweet melon and winter melon are semantically related. You can use "Sweet melon" instead a noun phrase "Winter melon".