Hi,
Here in the Netherlands, we use “Soldeer” for the material and “Solderen” for the process.
A picture of a part of my Solder collection.

Here in the Netherlands—and I live in Amsterdam—if you go 25 km north, for example to Volendam or Edam, people in those small towns speak a dialect that I can’t understand.
200 km to the east toward Germany or, for example, and to Friesland in the north of the Netherlands, they officially have their own language, so it’s not a dialect!
Here in the Netherlands, it's common for people to speak "ABN" when they meet someone who lives in a dialect-speaking or langguage region.
ABN stands for “Algemeen Beschaafd Nederlands” (Standard Dutch).
So that both sides can communicate clearly with each other.
So, in my opinion, at least those who communicate Internationally, say all streaming media and writing pers should use Solder to be as clear as possible.

My 2 cents
Kind regards,
Bram