Suppose I talk to five people and they are confused about something. Which expression should I say?
- I understand your confusion.
- I understand your confusions.
I've searched in the dictionary (OALD) that this noun is both countable and uncountable. This is one of the problems I have when learning English. It's really challenging to me how to know where I should use countable or uncountable form when the noun itself can be both.
This article Uncountable Nouns Can Also Be Countable explains that we can say plastics (we know plastic is uncountable) which means it's possible to pluralize the uncountable noun by adding s or es, even though my friend has confirmed that there's a strict rule for example advice that can't be pluralized.
I mention all of this because I want you to know what I've known and what I haven't understood. What is the best choice between (1) and (2), by the way?