albigensianism: a Christian movement considered to be a medieval descendant of Manichaeism in southern France in the 12th and 13th centuries; characterized by dualism (asserted the coexistence of two mutually opposed principles, one good and one evil); was exterminated for heresy during the Inquisition
cognition: the psychological result of perception and learning and reasoning
landslide: a slide of a large mass of dirt and rock down a mountain or cliff