Witch

The term "witch" can be used to refer to individuals descending from an extra dimensional species of human-like beings with vast magical power or the people that practice and/or adhere to the concept of witchcraft and identify with its symbolism but typically possess no actual magical ability or access to mystical influence.

Pure-Blood
Witches classified as "pure-bloods" belong to bloodlines that do not

Physiology
Longevity:

Half-Blood
Witches are considered "half-bloods" if they have a human parent or human ancestry.