invitee(A person who has been invited to a conference but has not accepted or who has accepted but the conference has not started yet (i.e., he or she is not yet a participant))
guest(A user who does not have a user account or who does not provide a password); Invited(The contact picture label that indicates someone has been invited to do something, but has not responded yet)
Invite(" A UI element, in a conversation window, that accesses the "Invite Someone" menu item. The user can then select a contact to add to the current conversation.")
