Not sure I understand your point, but "defenestrate" -> "de-fenestrate" which literally translates (via old French) as "un-window"!
Ed: see first part, and the section https://en.m.wikipedia.org/wiki/Defenestration#Origin_of_the...
It's not from old Latin, but rather from "new Latin".
Meanwhile in Swedish, the French origin "Fönster" is preferred.
What has enriched the Norwegian (and Danish and Swedish) language beyond the Germanic Scandinavian would be the importation of words from Latin, German, French, and English. All happening through trade and cultural influence, in roughly that order.
An recent example in Sweden involved a politician protesting about anglicanisation of the Swedish language. He wanted to replace some widely used English term with a Swedish equivalent. Tracing the origin easily revealed it was instead the English who are using a Scandinavian expression. Which Swedes are now finding convenient.
[1] English is a Scandinavian language (https://partner.sciencenorway.no/forskningno-history-languag...)
[2] https://en.m.wikipedia.org/wiki/List_of_English_words_of_Old...
That's... Not how vocabulary develops. English is a rich language in large part due to the conquest by the French - much like Norwegian is a rich language due to conquest by the Danish.
Although "defenestrate" is probably more like "tweet" than "computer" - I believe it was a bit of a "fashion statement" at the time.