~Shadow Dictionary~ 

Soul- is what Death and Dawn call Humans, souls are people who are destined to die

Soul Bringer- a person who captures Souls after Death

Decessus- the place of retirement for the Soul, where Dawn takes them after Death

Guardian- an Angel who is assigned to protect a Soul from Demons

Fallen- an Angel who was attacked by Demons 

Demon- a Fallen Angel who is living a life of sin

Death- the state of being dead or when a Soul is no longer in a Body