Nine ?

Okay so I’ve been reading at my books and watching some videos online and I had a moment of confusion And then I watched a very specific video that was talking about the nine realms and trying to list and name then all And I would imagine that like most things on the internet not everything said is fact but The creator of the video made a point at around 18:32 https://m.youtube.com/watch?v=y9747j8GEI4 Video titles - legends sunmarized: the nine realms

At this point the creator points out that the digit 9 pops up a lot and if often almost wrong And makes the proposition that nine as we use it and nine as written in scripture is different She basicly says that nine in old Norse and through translation did mean “a bunch” or “lots of” of something to that effect And after hearing that it very curious to hear what the people of the community think and if they have any agruement or agreements for this idea