Keeper (noun)

1. A person who takes care of something or someone.
2. A person who is responsible for the safekeeping of something or someone.

Origin:

Middle english kepere, from old english cēpere 'guardian, servant', from proto-germanic *kōparaz 'watchman'.

Examples:

1. The keeper of the museum was responsible for the preservation of the valuable artifacts.
2. The keeper of the park was responsible for maintaining the grounds and ensuring public safety.
3. The keeper of the zoo was an expert on the animals and their care.
4. The keeper of the lighthouse was a solitary figure, tasked with guiding ships safely through the night.
5. The keeper of the secret was trusted with the safekeeping of a valuable piece of information.