Brazing --A group of welding processes that produces coalescence of materials by heating them to the brazing temperature in the presence of a filler metal having a lquidus above 450 degrees Centagrade (840 F. I'll do the math) and below the solidus of the base metal.

Soldering--- A group of welding processes that produces coalescence of materials by heating them to the soldering temperature and by using a filler metal having a liquidus not exceeding 450 degrees Centigrade (840 F) and below the solidus of the base metals.

A myriad of nonstandard terms exist to describe the above processes. Sweating, Soft soldering and bronze welding are but a few.  It is a shame that Job interviewers attempt to hold applicants responsible for inaccurate and non-standard terms or procedures that they themselves do not understand nor can they explain, or even worse, that somebody's employment might hinge upon.

In treatment of the Non Standard term "White Welding" specifically.   My library does not hold a single indexed passage or article in reference to it.  This is why I offered the suggestion and even a respected resourse so that he might be able to research  the commonly used designation --white cast Iron.  And since the Inquisitor himself did not know the answer to the question he was asking, perhaps we will never know what the original author of the interview questions sought.

But its fun learning the terms people invent for established processes, The AWS publishes its terms and definitions, However there is a whole big world out there as Mr. Giovanni so persuasively demonstrates. And ya never know, someday those new terms might just come in handy or become the accepted norm.  In the mean time it is vital to attend to the questions of students and to try to direct them to responcible and respectable institutions and sources of information, codes, specifications or processes.  The days are gone in this trade when word of mouth or shop tradition are sufficient.