The Erinyes, to give them their Greek name, were avengers, who punished murders and other serious crimes, especially crimes against the family. Blood, both in the sense of blood spilled and kinship, was their concern.
The Irish Badb was one a number of terrifying goddesses of war. She could work battle magic to terrify the enemy, or just kill them with her terrifying shrieks. Badb could be one or many, and sometimes teamed up her sisters the Morrigan and Macha to wreak destruction.
The name badb comes from a Celtic root meaning “fury” or “violence”, from the Celto-Germanic *bodou, battle. The carrion crows that appeared at battlefields led to the other meaning, crow, and the idea of a crow goddess, so that Badb Catha meant “Battle Crow”. (Heijda: 12)