Quick meaning
A website where people post questions and answers on a topic, and others can reply in a thread.
Think of it like this
Like a community notice board where anyone can post a question and others pin their answers.
Where you may see this
You may hear this in email apps, messaging apps, video calls, and workplace instructions.
Why it matters
Knowing the term makes it easier to message people correctly and avoid simple communication mistakes.
Say it simply
Online Forum means: A website where people post questions and answers on a topic, and others can reply in a thread.