Here are the terms used in Blood+ anime.
Chevalier[]
Special type of chiropteran with far more enhanced abilities than other Chiropterans. A chevalier has the special ability to mate with queen chiropteran.
Chiropteran[]
Also known as Yakushu; they are monsters with enhanced speed and strength created from the blood of their queens.
Corpse Corps[]
Created using Diva's blood samples and data of Moses. They are void of emotions and have no thorn or vulnarability to sunlight.
D-Base[]
Also the fifth base; it is the unknown base (other than adenine, guanine, cytosine and thyamine) in the DNA of chiropterans that gives them special abilities.
Mice[]
Name used by Van Argiano to call the chiropterans.
Queen[]
Queen chiropteran is the source of all chiropterans as she has the reproduction ability. Everytime a queen conceives, she loses her blood power of healing. A queen always gives birth to twin queens with repelling blood attributes.
Schiff[]
Created from Diva's blood; they are previous versions of corpse corps. Their weakness is thorn which gradually spreads and they get destroyed in sunlight.
Thorn[]
A special kind of deficiency grown among schiffs that can lead to their demise.