Imam: In Shia Islam, an imam is not just a prayer leader but also considered an infallible spiritual guide who carries divine knowledge.
Battle of Karbala: A tragic event in 680 CE where Hussein ibn Ali (a prominent figure in Shiism) was martyred by forces aligned with Umayyad caliphate, solidifying the split between Sunni and Shia Islam.
Twelver Shia: The largest branch of Shia Islam, which believes in the existence of twelve divinely ordained imams.