I have two questions to ask to those expert in presenting papers since I'm a newb,

Whats the difference between these papers: full paper, extended abstract, technical paper, review paper? Any concise answer to this by those experienced will be greatly appreciated.
In my opinion all are the same. The difference is some conference / symposium / colloquium / workshop use different term.

and whats the difference between symposium and conference?
Meaning based on Oxford Dictionaries:

* Workshop: a meeting at which a group of people engage in intensive discussion and activity on a particular subject or project:

* Symposium: a conference or meeting to discuss a particular subject. a collection of essays or papers on a particular subject by a number of contributors.

* Conference: a formal meeting of people with a shared interest, typically one that takes place over several days: an international conference on the environment

Workshop and symposium have almost similar meanings, but I think workshop can be a meeting in a conference, but no conference

P/s: I think I will start posting alot in here. Plenty of questions in my mind I think I should consult with someone more expert.