What's the plural form of Bourbonism? Here's the word you're looking for.
Answer
The noun Bourbonism can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be Bourbonism.
However, in more specific contexts, the plural form can also be Bourbonisms e.g. in reference to various types of Bourbonisms
or a collection of Bourbonisms.
Examples
The fact is, we whites are in no position to indulge in the luxury of Bourbonism.
Politics, Bourbonism, Napoleonism, Boulangerism ere this had crept in unawares sporting strange disguises.