Definitions
1.NounA split or separation within a group or organization, typically caused by discord.
2.NounA formal division or split within a religious body."The schism between Sunnis and Shias happened quite early in Islamic history."
3.Nouna split within Christianity whereby a group is no longer in communion with the Church or its ecclesiastical authorities, but shares essentially the same beliefs; in other words, a political split without the introduction of heresy.
4.VerbTo split, divide (a group or organization).