I think you might be mixing different things here, because it’s fucked up shit
Northern Europe: British isles, Scandinavia, Finland, Baltics
Nordics: Finland, Sweden, Denmark, Norway, Greenland, Iceland, Faraoe islands
Scandinavia: Sweden, Norway, Denmark
Scandinavian peninsula: Sweden, Norway, North-western Finland
Fennoscandia: Finland, Sweden, Norway, Murmansk oblast, parts of Karelia and Leningrad oblasts
And there’s more stupid definitions for differently divided areas because fuck you
I feel called out lmao