[Standards] Wording JID, FullJid, baseJID,...

[Bernhard zwischenbrugger]

Hi all

I'm looking for correct wording:

romeo at example.com                                                       
// JID or BaseJID or?
romeo at example.com/home                                             // 
FullJID or JID?
romeo                                                                               
// username
home                                                                     
            // resource
example.com                                                                    
// host name?
conference.example.com                                                  
// host name?
<iq from="pubsub.example.com" node="something">   // jid+node
room at conference.example.com                                      // room 
jid?
room at conference.example.com/niki                               // room jid?

Is that specified in the XMPP standards?
-----
What means "IQ"?
What's the big difference between IQ and MESSAGE?


thanks

Bernhard
PS: I'm teaching that things and must be very correct.