The Kin

Bos Turokh

 * Bos Turokh is a bull deity known as the 'World Bull', and the central figure in Steppe culture. He created the universe after consuming Suok, the personification of evil. He encompasses everything.
 * His earthly manifestation is known as Bos Primogenios, also known as an an auroch (half-human, half-bull hybrid). There are said to be very few auroch left in existence.

Suok

 * Suok is a void of consuming darkness which Bos Turokh devoured, smothering Suok's progression with his body. It now resides within the World Bull, and is said to be the source all evil things. Unlike Boddho and Bos Turokh, it is never personified, and instead remains a concept of pure evil. Blood is sacrificed in the Circle of Blood to appease Suok.

The Bull Project

 * The name of everything related to the Order and the industrial aspect of the town—the train station, factories, and warehouses, as well as the Termitary and Abattoir. It can also refer to the town's meat-processing industry.
 * All aspects of the Bull Project are owned by the Oglimsky family.

The Order

 * The Order is an organization of Steppe natives and a cult that worships Bos Turokh. They believe bulls to be sacred. Once, they were a nomadic people that lived on the Steppe, but now most live in the Termitary and work for Big Vlad.
 * They are the working class of the town, each caste performing their traditionally-given roles. Their labor supports the town economically.

Menkhu

 * The menkhu—"Those Who Know The Lines"—are a special caste who are allowed to open bodies. While menkhu are notable in-game for their ability to dissect human bodies, their main purpose seems to be the dissection of bulls.
 * The right to open bodies is passed down through family inheritance. Isidor Burakh is an esteemed menkhu, and he passes this knowledge to his son, Artemiy.

Worms

 * Humanoid creatures—"the Worms inside Boddho's body"—who work for the Order. They are responsible for many tasks, such as the harvesting of herbs, creating medicines, and trading. Many worms live in yurts near the border of the Steppe.
 * A worm that has the duty of herding cattle between the Steppe and the Abattoir is known as an odonghe.

Herb Brides

 * While implied to be the females of the Worm "species", they nonetheless appear fully human. They commune with the earth and dance to bring herbs to the surface.
 * Traditionally, herb brides are only allowed to couple with odonghe, and can be bought and traded between them.

Butchers

 * Workers of the Abattoir who are tasked with the the slaughter of bulls and the processing of their meat. Like the worms, their level of humanity is uncertain.
 * While they are traditionally able to dissect bulls, they are still prevented from the dissection of human bodies.

Boddho

 * A female personification of the Earth, styled as a mother. She is similar to Bos Turokh (as the progenitor of existence) and there is in-game debate over the creation myth. The land is her body and thus cannot be excavated or dug into.
 * Boddho is said to have created all life and considers them all as her children.

Children of Boddho

 * While Boddho created all life, only Steppe natives and the "spirits conjured by the earth" are formally considered to be "Children of Boddho."
 * They sacrifice blood to the soul to help Boddho thrive and grow, and believe in the preservation of the laws of nature.

Shabnak-Adyr

 * An evil, feminine spirit said to be made of clay and bone. She devours people and spreads the Sand Plague. She is infamous among the townsfolk.
 * Prior to the start of the game, Isidor Burakh is said to have seen her shortly before dying, and thus his and Simon Kain's deaths are initially blamed on her.

Albino

 * A strange being made out of clay. He considers himself to be Clara's brother and is an embodiment of the Sand Plague. He is hunted by Sticky.

Rat Prophet

 * A creature with the head of a rat and the body of a human that lives underneath the Theatre. He is able to see the future, but often tells lies. He visits Katerina at night and influences her prophecies.

Customs

 * Neither the Earth nor the human body was made to be cut into. The Earth is sacred, so excavation too deep into the "earth's flesh" is a severe crime. As such, wells and organized digging are prohibited.
 * Likewise, cutting into the human body is a capital offense, and a powerful taboo. While the menkhu are traditionally able to open bodies, they are still regarded with some distaste.

The Law

 * The natural "law" of the Earth. The Law is considered to be the will of Boddho herself; Steppe spirits are said to be created in order to fulfill it. The Changeling and her Bound all share a common goal in the preservation of the Law.
 * Since the Polyhedron had to be planted so deeply in the ground, it is considered to defy the Earth and the will of Boddho, and the most prominent example of "the breaking of the Law."

Industrialization

 * Although the Order participates heavily in the meat industry of the Town, when the railroad was first built it was treated with great suspicion. Sometimes the rails were even sabotaged during their construction, or trains would just disappear. The Olgimskys and other leaders of the Town made no real attempt to do anything about this. Those from the Capital consider the rail that leads to the Town-on-Gorkhon to be cursed.

Alphabet

 * The runes of the Steppe—the "long marks of Turokh"—could be considered the alphabet of the native people. They are more similar to "signs" than letters, with every mark having multiple meanings: each is "akin to a song" with layers of history attached to it.
 * Cattle are ritually branded with the symbols, and the rune can correspond to both the owner or the age of the bull. Branding a bull is a stage in an intricate ritual that spans years.

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Other Terminology

 * Oynon: A title of respect used for doctors or scientists, meaning "wise man". The Burakhs, Daniil Dankovsky, and Stanislav Rubin are all referred to as "oynon".
 * Bos: An honorific title given to leaders. For example, Big Vlad is referred to as "Bos Vlad" by the Order. The title may be derived from the name of Bos Turokh.
 * In one piece on twyre from the old Pathologic site, there was a snippet of the language of the steppe.  '“Twyre is pain of the Steppe” – so says the Order (‘huung twyrat ag agyl').'

Twyrine & herbs
Twyrine is a drink that has long been made out of the twyre of the steppe. Although it has become fashionable outside of the Steppe it is really not possible to standardize recipes for the making of twyrine. Every root of twyre is different, and some may only be picked on certain days, months, or years. The people of the steppe believe that twyre feeds off the deeply-buried blood of the Earth and the pain of its era. Some say it even grows from the souls of the dead.