Garlic powder is ground, dehydrated garlic. It is a very common seasoning. Applications include pasta, pizza, and grilled chicken. Garlic salt is simply salt plus garlic powder. Garlic powder is a common component of spice mix.
Cajun Seasoning is also called creole seasoning. This spice is quite popular in North America and in other native countries. The strong combination of onion, garlic and paprika create a zesty aromatic seasoning