Left-hand path and right-hand path
In Western esotericism, left-hand path and right-hand path are two opposing approaches to magic. Various groups engaged with the occult and ceremonial magic use the terminology to establish a dichotomy, broadly simplified as (malicious) black magic on the left and (benevolent) white magic on the right.
Source: Wikipedia — Left-hand path and right-hand path (CC BY-SA 4.0)