As nouns the difference between billot and billon
is that billot is bullion in the bar or mass while billon is any of several alloys of precious metals and base metals that is used (where legal) to make coins, medals etc.
billon
English
Noun
(
wikipedia billon)
(
en noun)
Any of several alloys of precious metals and base metals that is used (where legal) to make coins, medals etc.