retrieval (n.)

• deliverance
• delivery
• extrication
• freeing
• liberation
• lifesaving
• ransom
• recapture
• reclamation
• recovery
• recuperation
• redemption
• release
• reoccupation
• repossession
• rescue
• restoration
• resumption
• retake
• retaking
• revival
• salvage
• salvation
• saving