Prevents harm or loss; keeps someone or something safe

• Rescues from danger or difficulty
• In religious use, delivers from sin or damnation

Writes data to a file or other storage

• Preserves current work so it is not lost

Avoids spending or waste; economizes

• Spares time, effort, or expense

Defensive plays that prevent an opponent from scoring

• Baseball: successful relief appearances credited with preserving a lead

Acts or results of storing data to a device