Canon: What happens within the series that is determined by the authors. Basically, the facts within the show. Fanon: What wasn't stated within canon but that every fan seems to agree as plausible or most likely. CrackFic: Non-sensical and totally OOC fics that are made to laugh at. Fluff: Silly, romantic and incredibly sweet fics. One-Shot: A single, sometimes short story that will never be continued or expanded upon. Slash: Usually it's used to refer to gay/lesbian pairings that aren't canon, but it used to mean simple pairing. Ship: What relationship within your fandom that you promote like crazy, and demand that everyone else agree. For example, I ship Mai/Zuko. So I not only have icons of it and declare publicly how awesome it is, but I also write a bunch of fics depicting it.
Re: Not quite on topic...But sort of?
Fanon: What wasn't stated within canon but that every fan seems to agree as plausible or most likely.
CrackFic: Non-sensical and totally OOC fics that are made to laugh at.
Fluff: Silly, romantic and incredibly sweet fics.
One-Shot: A single, sometimes short story that will never be continued or expanded upon.
Slash: Usually it's used to refer to gay/lesbian pairings that aren't canon, but it used to mean simple pairing.
Ship: What relationship within your fandom that you promote like crazy, and demand that everyone else agree. For example, I ship Mai/Zuko. So I not only have icons of it and declare publicly how awesome it is, but I also write a bunch of fics depicting it.
I hope that helps =D