noun
Northern Europe
Refers to the northern part of Europe, including Scandinavia, the Baltic states, and sometimes the British Isles.
北ヨーロッパの国々は福祉が充実している。
The countries of Northern Europe have well-developed welfare systems.
北欧 is a more common and slightly broader term for Northern Europe, often used in contexts like 北欧神話 (Norse mythology). 北ヨーロッパ is more explicitly geographical and less idiomatic.
Compound of 北 (north) and ヨーロッパ (Europe).