title and tags, thread and message

[Ju]

There are some questions from this websites as follow.

1. What are the differences between title and tags?
2. For submit new thread, what are the differences between thread and message. Are they interchangeable?

Thanks.

[Tdol]

1 The title is what appears in the index when you open a section of the forum. Tags are keywrods that are associated with a topic, so you can look for similar subjects: http://www.usingenglish.com/forum/tags/

2 A thread is all the messages together- the question and all the replies. There are now two posts in the thread- your question and my answer, so they aren't intercvhangeable.