What name is commonly applied to the norden countries?

The most common name applied to the Nordic countries is "Scandinavia".

However, it's important to note that "Scandinavia" is not technically accurate. It only encompasses Sweden, Norway, and Denmark.

The term "Nordic" is more inclusive and refers to Sweden, Norway, Denmark, Finland, and Iceland.

So, while "Scandinavia" is the most commonly used term, "Nordic" is the more accurate and inclusive name.