It seems confusing for some people so I made this chapter. Its just based on my understanding
Mana- All things in the world have mana. Be it living or non-living, magic beasts, in the air, mana is everywhere.
Magic Power- According by Deon Lord Badigadi. Its the same as Ki/Chi/Nen on martial artists. But in this world its called Touki or Fighting Spirit if Translated.
Destiny- Literally Destiny or a the fate of people.
Will of the D.- One Piece reference saying they are the destined enemies of the Gods.
Spirit- Originally I just put this there since I don't know the stats for the Touki, but then I realized Touki=Magic Power.
I still need to read the Older Dragon's Tale to understand the world more. Its the story of Laplace.