Well, yes and no since curry powder is really just a mixture of a variety of different spices all working to make up a specific flavor profile. And most commercially distributed curry powders don't actually have curry in them therefore the curry pastes that are made with commercialized curry powders also don't.
And I use a lot of those same spices that go into a 'curry powder' when I make chili so does that make my chili into a curry?