trader/warrior
Deity
Bok and NN refer to Bokmal and Nynorsk respectively, which is kind of a big deal in Norway from what I've heard. See here.
But technically Norwegian is one language with a whole mess of dialects of which Bokmål and Nynorsk are just written versions with different dialectical focus with no "pure" Bokmål or Nynorsk speakers actually in existence. However I would assume that for this linguistics research they are going by written language as it is a lot easier than trying to figure out the mess of stuff people actually speak.