Conservator
Part of speech: noun
Definition: One who conserves, preserves or protects something. A person appointed by a court to manage the affairs of another; similar to a guardian but with some powers of a trustee. A judge delegated by the pope to defend certain privileged classes of persons from manifest or notorious injury or violence, without recourse to a judicial process. A professional who works on the conservation and restoration of objects, particularly artistic objects.
Curator
Part of speech: noun
Definition: A person who manages, administers or organizes a collection, either independently or employed by a museum, library, archive or zoo.
Example sentence: The real problem with the art world is not the money men scavenging in its wake - they've always been there - but the pirates who've taken over the ship. I am thinking, of course, of that awful art world species: the curator.