What's the difference between having backups and having disaster recovery?

Backups are a necessary but insufficient component of disaster recovery. DR additionally requires: backups stored independently of the primary infrastructure's failure domain, a documented and tested restore procedure, a defined and validated RTO/RPO that the actual restore process can meet, and ideally periodic drills proving the whole chain works end to end. A backup that has never been restored, or that lives in the same region as the data it protects, gives a false sense of security.