noun (n)

• attention and management implying responsibility for safety(noun.act)

  Synonym:
  care, charge, tutelage
  

  source: wordnet30
• the responsibility of a guardian or keeper(noun.act)

  Synonym:
  keeping, safekeeping
  

  source: wordnet30
• The office, duty, or care, of a guardian; protection; care; watch.(noun)

  source: webster1913