What makes a curry "curry"?

Because in different parts of this words, they have their own version of a curry with different spice combinations. What made me wonder is, just an example, I made Nigerian stew and the recipe calls for curry powder but it made me think, why isn't it called "Nigerian curry"? According to this https://www.escoffieronline.com/what-makes-a-curry-a-curry/#:~:text=Ultimately%2C%20it%20seems%20as%20though,in%20a%20heavily%20spiced%20sauce. it says here "Ultimately, it seems as though curry is more properly thought of as a culinary tradition or style than a particular dish. Making a curry simply involves the preparation of a meat or vegetable dish in a heavily spiced sauce" Not only that but many stews from different countries are heavily spiced which even contains turmeric, coriander and chili powder and not considered curry. Of course I know stew and curry are different. They have different techniques but some makes curry as if it was stew like slow cooking the meat until tender. So that's why i ask, what do you consider curry to be "curry"? Or i guess that term just got reduced into just a label.

I made an original recipe. It's like stew and heavily spiced and I would consider it a version a curry just because.
What makes a curry "curry"?
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