* Delicacy is a noun meaning:
* a food considered to be especially fine or luxurious.
* something pleasing and refined.
* Delicious is an adjective meaning: very pleasant to taste.
While they both relate to food and pleasantness, they are distinct words with different meanings.
Here are some examples:
* Delicious: "The cake was absolutely delicious!"
* Delicacy: "Lobster is considered a delicacy in many cultures."