Is chili pepper and powder the same thing?

No, chili pepper and chili powder are not the same thing.

Chili pepper refers to the dried fruit of the capsicum plant, which can be used whole or ground into a powder. Chili powder, on the other hand, is a blend of ground chili peppers and other spices, such as garlic, onion, cumin, and oregano. The exact combination of spices used in chili powder can vary depending on the region and personal preference. Chili powder is a common ingredient in Tex-Mex and Mexican cuisine, and it can be used to add flavor and heat to a variety of dishes, including chili, tacos, burritos, and enchiladas.