Chili powder with an “I” is not the same as chile powder with and “e”. Chili powder is usually a blend of ground mild dried chiles and spices like cumin, pepper, and salt (Hot chili powder contains cayenne, too.). They are lighter in color since they are a blend of spices. Pure chile powders are ground solely from a specific kind of chile with no additional ingredients. They are reddish in color and have a strong flavor profile. I use chili powder as the backbone spice of my chili, while pure chile powders let me add exactly the additional kind of chile flavor and heat that I want. You can find pure chile powders at most supermarkets, ranging from the moderately hot pasilla, ancho and smoked, to the much hotter chipotle and cayenne. Aside from heat, you will find chile powders have different degrees of smoky and fruity flavors. The best way to get to know their flavors is to cook with them.
Here are a few chili recipes to help you get to know your chile powder varieties. Feel free to experience and substitute different types of chili powder in these recipes. Remember though the pure chile powders add a bit of heat so add them slowly and taste the terrific results!
Chicken and White Bean Chili
Chili with Assorted Chile Powder and Meat 
Black Bean Chili 
Mexican Chili 
Traditional Chili With Meat 
Vegetarian Chili 
And lots of great recipes with Chili Powder here 
Don’t forget to make the Chili Chocolate Covered Strawberries !