melon
The French word for melon is 'melon'. It is used exactly the same way as in English, to refer to the large round fruit with a thick rind, sweet flesh, and many seeds. In France, 'melon' can also refer to a variety of melon called 'Charentais'.
I like to eat melon during the summer.
This is a general statement, expressing preference for consuming melon during the summer season.
The melon is ripe when it smells good.
This is an observation about how to tell when a melon is ripe, which is when it starts to emit a pleasant smell.
My mother bought a melon for dessert.
This talks about a recent action where the speaker's mother purchased a melon to be eaten as dessert.