What are you confused about?
Awww, don't sweat it, it's only fun
The Istari are a sub-set of Maia. They were tasked for a particular purpose: to counsel and inspire the Free Peoples of Middle Earth to resist Sauron. They were forbidden to match power with Sauron directly, and instructed not to use their might and power to bend any to their will.
"Normal" Maiar are not bound to a physical form. The Istart were bound to the 'mortal coil', until their task was done (and Sauron defeated). Nearly all "Normal" Maiar ceased to openly roam Middle Earth before the First Age.
The Istari, the Enemies (Sauron, the Balrogs, maybe Shelob, by inheritance from Ungoliant, could be counted), and (possibly) others like Tom Bombadil and the Great Eagles were different from "Normal" Maiar, because:
A) They resided in Middle Earth after the First Age
B) They were bound to their forms, the Enemies by the way they used their Will to increase their power over the world, the Istari because of their mission, and the others .. who knows, some may even have been able release their Fana (mortal form) at will.
Does this help?
Re: Awww, don't sweat it, it's only fun
Quote:
Originally posted by Manveru
Does this help?
Immensly :)
Thanks for taking the time to walk me through it. :)