Is “discussion” an uncountable noun?


Is “Open discussion can lead to better understanding” grammatically correct? 

No, it should be “An open discussion can lead to better understanding.”

No, it should be “Open discussions can lead to better understanding.”

Is “There was a lot of discussion about the changes.” grammatically correct?

No, it should he “There was a lot of discussions about the changes.”

Why is “There was a lot of discussion about the changes.” grammatically correct?

As using “was” so it should be “discussion”

Would “There were a lot of discussion about the changes.” be grammatically correct too?

No, “were” should be used with “discussions”

Would “Our weekly discussions help us stay on track.” be grammatically correct?

No, discussion is an uncountable noun. It shouldn’t have “s” at “discussion”

Yes, it is correct. Discussion can be both uncountable and countable nouns