What's the plural form of Gouraud shading? Here's the word you're looking for.
Answer
The noun Gouraud shading can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be Gouraud shading.
However, in more specific contexts, the plural form can also be Gouraud shadings e.g. in reference to various types of Gouraud shadings
or a collection of Gouraud shadings.