I think we're splitting hairs on the solder/braze nomenclature as they can be found used and/or misused in a lot of different places. That seems especially true of the low silver alloy solders/brazes (is that a word?). Safe to say that both use a metal different than the parts being joined and of lower melt temperature. The high silver content solders/brazes have such a high melt temp that I find them undesireable for barrel joining. Although, I can see how a mfr might find some attraction with them.