Nestorianism
Nestorianism is a movement within Christianity. The idea behind the doctrine is that Jesus has two different natures: the man Jesus and the son of God (Greek: Logos). Perhaps the most prominent supporter of the idea was Nestorius, an archbishop of Constantinople who lived about from 380 to 450 AD. The Council of Ephesus condemned his view in 431. That led to a split of the church into the Assyrian Church of the East and the Byzantine Church.
For that reason, the Assyrian Church of the East is sometimes called "Nestorian". It holds the view that Christ has two essences (qnome), which are united in one person (parsopa).
The only two churches that teach Nestorianism today are the Assyrian Church of the East and the Church of the East & Abroad.
Nestorianism Media
A depiction of Nestorius being defrocked and having his vestments removed at the Council of Ephesus. A 15c mural in Ferapontov Monastery.
Nestorian priests in a procession on Palm Sunday, in a seventh- or eighth-century wall painting from a Nestorian church in Qocho, China
Christological spectrum during the 5th–7th centuries showing the views of the Church of the East (light blue), the Chalcedonian Churches (light purple), and the Miaphysite Churches (pink)
Chinese stone inscription of a Nestorian Cross from a monastery of Fangshan District in Beijing (then called Dadu, or Khanbaliq), dated to the Yuan Dynasty (AD 1271–1368) of medieval China
Epitaph of a Nestorian, unearthed at Chifeng, Inner Mongolia
Saint Mary Church: an ancient Assyrian church located in the city of Urmia, West Azerbaijan Province, Iran