Karuna (करुणा) is the Sanskrit-Pali word for "compassion" — one of the four Brahmavihārās (sublime states) of Buddhism, alongside loving-kindness, sympathetic joy, and equanimity. The compassion of Avalokiteshvara (Guanyin) is named for her.
Used widely across South and East Asia.
Karuna reduces to three — the number of Buddhist compassion.