Of powers outside our realism?

[Paradus]

Greetings to all

One thing I love about Tolkien's world (and other fantasy settings) are of powers of which could not be obtained in the real world. The reason is for when reading I enjoy falling within a world quite seperate from our own, where your imagination can run free.

Now on to my question.
Of the many powers and abilities of arda's inhabitants I'am curious about.

What powers did the elves have over men (Besides superior senses)?

What is the so called inner power of the eldar races which is noted as "magic"?

How strong physically were the eldar races compared to men? Were unnatural or supernatural feats common?

What physical differences and abilities did the dwarves have from other races (besides body structure)?

How do the abilities of unique individuals (Beornings-shapeshifting, Malbeth- foresight, Witchking- flaming sword etc) manifest?

What of the glowing and superior power of elven blades?

How do the spirits of death manifest upon the physical plane (Barrow-wights, the fallen of dunharrow etc)?

How do the trees come to life (I.e old man willow for example)?

Does the power of Illuvatar have any limits?

What of the power of song and music?

Finally what powers did the great Morgoth have at his disposal?

cheers.