Origin: Greek suffix -ism
Nestorianism has 2 different meanings across 1 category:
the theological doctrine (named after Nestorius) that Christ is both the son of God and the man Jesus (which is opposed to Roman Catholic doctrine that Christ is fully God)
The heterodox religious beliefs of the followers of Nestorius. These included that Christ has two natures, one wholly human and one wholly divine, that Mary was the mother of his human nature, and that each is to be worshiped as God.