What's the difference between a comet, asteroid, meteor, meteoroid and…

With all the recent buzz over asteroid AD14, the meteor over Chelyabinsk, the fragments of meteorite recovered in Russia's Ural mountains, and yesterday's news that the fireball originated from our solar system's asteroid belt, one can't help but wonder: what's the difference between all these -oids, -ors and -ites?… » 2/27/13 12:40pm 2/27/13 12:40pm