Origin: Latin suffix -sion
Discussion has 3 different meanings across 1 category:
an extended communication (often interactive) dealing with some particular topic
"the book contains an excellent discussion of modal logic"
"his treatment of the race question is badly biased"
an exchange of views on some topic
"we had a good discussion"
"we had a word or two about it"
Conversation or debate concerning a particular topic.
"The team held a heated discussion about whether to launch the new product next month."
In plain English: A discussion is when people talk about something to share ideas or solve a problem.
"The team had a long discussion about the project deadline."
Usage: Use "discussion" to describe a formal or informal exchange of ideas where participants actively talk about and consider a specific subject. It implies more than just passing comments, suggesting that there is an attempt to explore the topic in depth.
The word entered English via the Old French discussion, which came from the Late Latin discussiō. Originally meaning a shaking apart or sifting through ideas, it evolved to describe an exchange of views.