Celentro is not a direct substitute for coriander, as they have distinct flavors and culinary uses. Coriander has a bright, citrusy taste, while celentro, often confused with cilantro, has a more herbaceous flavor. If you're looking for a substitute, you might consider using parsley or a blend of herbs, but the taste will differ. It’s best to use the specific herb called for in a recipe for the most authentic flavor.
I think you mean cilantro. Cilantro means in Arabic كزبرة and you can kozbara
Chili powder is a blend of spices. You can make your own or substitute the spices by using red pepper, garlic, oregano, cumin, paprika and garlic these are the most common. Some cooks may add cinnamon, clove, mace, corinder nutmeg or turmeric. I know some who like a little bay leaf in theirs.