CARETAKER
caretaker
(noun) a custodian who is hired to take care of something (property or a person)
caretaker
(noun) an official who performs the duties of an office temporarily; “he acted as a caretaker until a new president could be elected”
Source: WordNet® 3.1
Etymology
Noun
caretaker (plural caretakers)
Someone who takes care of a place or thing; someone looking after a place, or responsible for keeping it in good repair.
Synonyms: concierge (British), janitor
Someone who takes care of a person; a parent, carer or other guardian.
Adjective
caretaker (not comparable)
(chiefly, UK) Temporary, on a short term basis.
Synonym: interim
Source: Wiktionary