 Some later authorities, such as Cicero, called them by a Latin name, "Tenebrae" "the Darknesses", and named them daughters of Erebus and Nyx.The Greek word κήρ means "death" or "doom" and appears as a proper noun in the singular and plural as Κήρ and Κῆρες to refer to divinities.Homer uses "Κῆρες" in the phrase "κήρες θανάτοιο", "Keres of death".