About the word concern and its countability
In what circumstances, is concern used as uncountable and countable?

For example, to express concern or concerns. Which of these are correct, or are both correct?

Question

About the word concern and its countability
In what circumstances, is concern used as uncountable and countable?

For example,  to express concern or concerns. Which of these are correct, or are both correct?

Answer

I think that both are correct. 'Concerns' if you have specific concerns, and particularly if you list them. Concern if your concern is more general - such as if it relates to a feeling, or general impression