Preserve
What it means
Meaning 1
To protect something valuable from loss, damage, or destructive change.
Reach for it when describing stewardship that keeps essential character or evidence intact
The new roof will preserve the murals through another wet season.
Meaning 2
To prepare food so it remains safe and usable for longer.
Reach for it when describing treatment that delays spoilage
The cooperative will preserve the late tomatoes as sauce.