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