Nomenclature: A system of names used in a particular discipline, as in medicine and surgery, anatomy and biochemistry, etc. A standard system of nomenclature presupposes the existence of an organized classification of the entities within that field. From the Latin nomenclatura, a listing of names, from nomen, name, + calo, to proclaim.
Yangire (also referred to Cute and Psycho) is a Japanese term used to refer to normal people who suddenly become violent, sometimes due to a past trauma. Yangires are very similar to Yanderes, both are people who suffer from personality disorder and can easily become violent and extremely dangerous.
Types of Yangire. Y1P is shorthand of Yangire 1 Personality. A Y1P are Yangires that only have 1 personality, in other words, Y1P are Yangires who know very well what they do and have full control of the mind without showing any type of mental illness which affects the exchange of personality.