Brazing and soldering describe the exact same process. The only distinction is that solders melt at lower temperatures. High temperature silver solders are brazes.

Borrowed from the net:
What is the difference between brazing and soldering?
Brazing - The AWS defines brazing as a group of joining processes that produce coalescence of materials by heating them to the brazing temperature and by using a filler metal (solder) having a liquidus above 840°F (450°C), and below the solidus of the base metals.

Soldering - Soldering has the same definition as brazing except for the fact that the filler metal used has a liquidus below 840°F (450°C) and below the solidus of the base metals.