NetNews terminology

1. category: top level name of the organisational structure of newsgroups.
2. newsgroup: is a special interest group.
3. article: is a post to a specific newsgroup.
4. thread: a set of articles with the same subject.
5. newsfeed: workstation used to propagate the news to newsservers.
6. newsserver: a workstation storing news articles.
7. newsreader: a program used to read the NetNews off the newsserver.