In my head at least, backups are a subset of disaster recovery. They are linked, but you can do backups without doing disaster recovery (for example, just turn

In my head at least, backups are a subset of disaster recovery. They are linked, but you can do backups without doing disaster recovery (for example, just turning on TimeMachine backups to a usb drive on your Mac is “backups” without being “disaster recovery”), but you can’t do disaster recovery without backups. But you also need archives, and retention policies, and recovery procedures and test plans, and training and practice for the people responsible for DR, and hardware/site/network disaster recovery plans and resources, and recovery time objectives and recovery point objectives, and a whole bunch of other “not directly backup” related stuff. But I admit that colloquially that might all be assumed in certain contexts to be “backups”, but that’s a probably dangerous assumption unless everybody in that discussion is totally on the same page about just how much of that related disaster recovery stuff is actually in place and ready.