Avatar of the North said:PARALYSIS
Some monsters and spells have the supernatural or spell-like ability to paralyze their victims, immobilizing them through magical means. (Paralysis from toxins is discussed in the Poison section below.)
A paralyzed character cannot move, speak, or take any physical action. He is rooted to the spot, frozen and helpless. Not even friends can move his limbs. He may take purely mental actions, such as casting a spell with no components.
A winged creature flying in the air at the time that it becomes paralyzed cannot flap its wings and falls. A swimmer can’t swim and may drown.
Held: Immobile as aresult of a spell or magical enchantment (such as hold person). Held characters are helpless and can't perform any physical action. Such characters continue to breath normall, however, and can take purely mental actions
As you can see Held and paralysis are different conditions. Many mosters while immune to paralysis can very easily be hit with a hold monster
Hold Animal
Enchantment (Compulsion) [Mind-Affecting]
Level: Animal 2, Drd 2, Rgr 2
Components: V, S
Target: One animal
This spell functions like hold person, except that it affects an animal instead of a humanoid.
Hold Monster
Enchantment (Compulsion) [Mind-Affecting]
Level: Brd 4, Law 6, Sor/Wiz 5
Components: V, S, M/DF
Target: One living creature
This spell functions like hold person, except that it affects any living creature that fails its Will save.
Arcane Material Component: One hard metal bar or rod, which can be as small as a three-penny nail.
Hold Monster, Mass
Enchantment (Compulsion) [Mind-Affecting]
Level: Sor/Wiz 9
Targets: One or more creatures, no two of which can be more than 30 ft. apart
This spell functions like hold person, except that it affects multiple creatures and holds any living creature that fails its Will save.
Hold Person
Enchantment (Compulsion) [Mind-Affecting]
Level: Brd 2, Clr 2, Sor/Wiz 3
Components: V, S, F/DF
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Target: One humanoid creature
Duration: 1 round/level (D); see text
Saving Throw: Will negates; see text
Spell Resistance: Yes
The subject becomes paralyzed and freezes in place. It is aware and breathes normally but cannot take any actions, even speech. Each round on its turn, the subject may attempt a new saving throw to end the effect. (This is a full-round action that does not provoke attacks of opportunity.)
A winged creature who is paralyzed cannot flap its wings and falls. A swimmer can’t swim and may drown.
Arcane Focus: A small, straight piece of iron.
Hold Person, Mass
Enchantment (Compulsion) [Mind-Affecting]
Level: Sor/Wiz 7
Targets: One or more humanoid creatures, no two of which can be more than 30 ft. apart
This spell functions like hold person, except as noted above.
~Johnny~ said:One thing worth mentioning is that the feat was originally called "Adamantine Laced Body," so the actual adamantine content might not be that huge. There's sure to be some value in the body of a dead warforged, but removing it would be an arduous process, and comparable to cutting apart your enemies' bodies for spell components.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.