Discussion vs Discussions - What's the difference?

As nouns the difference between discussion and discussions

is that discussion is conversation or debate concerning a particular topic while discussions is plural of lang=en.

(wikipedia discussion)

(en noun)

Conversation or debate concerning a particular topic.

There was then a long discussion of whether to capitalize words like "east".

This topic is not open to discussion .

Text giving further detail on a subject.

Under each heading, you will find a discussion section.

(head)

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