Both foundation and powder are one category of cosmetic products. These are the basic foundations that are used in both everyday and evening makeup. Which is better is difficult to answer, since they are still slightly different, and the choice depends on the type of skin. However, it often happens that there is no need to choose: both are necessary.
Normal
In this case, you can choose a product that you are used to using. The assortment is very diverse. Any base will do.
Dry and combined
The ideal choice is a foundation with hydrating substances, but it is better to avoid powder, since it still dries out the skin a little.