I have a cookbook from a Thailand cooking school for tourists that lists
1 Tbsp galangal chopped finely
and then
6-8 cm ginza, skin removed (substitute: old dull ginger)
I assumed from this recipe that they’re separate ingredients but in looking online I’ve found some few sources containing both terms and they seem to indicate they are the same ingredient.
Are they the same? Different? It’s difficult to find information on “ginza” as an ingredient, and much easier to find articles on galangal.