preserver

definition: rescue equipment consisting of a buoyant belt or jacket to keep a person from drowning
example:
speech part: noun
synonyms: life preserver
definition: someone who keeps safe from harm or danger
example:
speech part: noun
synonyms:
definition: a cook who preserves fruits or meat
example:
speech part: noun
synonyms:
definition: a skilled worker who is employed to restore or refinish buildings or antique furniture
example:
speech part: noun
synonyms: refinisher renovator restorer

How preserver is being used?