Valar and Creation

[lathspell]

Great questions, Joy!
As for the trolls being created in mockery against the dwarves, it is not so. It was in mockery against the Ents, who were also created out of Arda.
The Ents were thought of by Yavanna but they were made by Ilúvatar, or so it says in the Silmarillion - of Aulë and Yavanna:

Then Manwë awoke, and he went down to Yavanna upon Ezellohar, and he sat beside her beneath the Two Trees. And Manwë said: 'O Kementari, Eru hath spoken, saying: "Do then any of the Valar suppose that I did not hear all the Song, even the least sound of the least voice? Behold! When the children awake, then the thought of Yavanna will awake also, and it will summon spirits from afar, and they will go among the kelvar and the olvar, and some will dwell therein, and be held in reverence, and their just anger shall be feared. For a time: while the Firstborn are in their power, and while the Secondborn are young." But dost thou not now remember, Kementári, that thy thought sang not always alone? Did not thy thought and mine meet also, so that we took wing together like great birds that soar above the clouds? That also shall come to be by the heed of Ilúvatar, and before the Children awake there shall go forth with wings like the wind the Eagles of the Lords of the West.'

The Ents were part of Yavanna's song, so she created them in thought, and Ilúvatar made them for real.

greetings,
lathspell

P.S.: Amarinth - please explain the word 'fea'. I tried to translate it, but couldn't find anything. Do you mean 'fee'?