This is the 2329th most frequent French word.
orange
A round, juicy citrus fruit with a tough, bright orange skin.
Here, 'orange' is a noun referring to the fruit.
J'ai mangé une orange délicieuse ce matin.
I ate a delicious orange this morning.
In this sentence, 'orange' is used as an adjective describing the color.
Le coucher de soleil était d'une belle couleur orange.
The sunset had a beautiful orange color.
Again, 'orange' is an adjective referring to the color of the curtains.