The terms backup and dump are often used interchangeably with archive.
Restore, which is a specific Teradata ARC keyword and the name of a Teradata ARC operation, is part of the recovery process. In addition to restore, recovery entails other operations, such as returning data tables to their state following their modification (called rolling forward), returning data tables to the state they were in before they were modified (called rolling back), and so on. For further explanation, see Chapter 6: “Archive/Recovery Control Language.” There is no Teradata ARC statement called “recover.”
The difference between copy and restore is in the kind of operation being performed: