survivor's benefit
A payment made to the family of a deceased person, typically from social insurance or a pension system.
A death certificate is required to apply for survivor's benefits.
遺族年金 specifically refers to a survivor's pension, while 遺族給付 is a broader term that can include lump-sum payments and other benefits.
Compound of 遺族 (surviving family) and 給付 (provision, payment).