custody vs maintenance

custody

noun
  • Temporary possession or care of somebody else's property. 

  • The state of being imprisoned or detained, usually pending a trial. 

  • The legal right to take care of something or somebody, especially children. 

  • An area under the jurisdiction of a custos within the Order of Friars Minor. 

maintenance

noun
  • Money required or spent to provide for the needs of a person or a family. 

  • The natural process which keeps an organism alive. 

  • Child support. 

  • Actions performed to keep some machine or system functioning or in service. 

  • A tort and (in some jurisdictions) an offence committed when a third party who does not have a bona fide interest in a lawsuit provides help or acquires an interest to a litigant's lawsuit. 

  • Alimony, a periodical payment or a lump sum made or ordered to be made to a spouse after a divorce. 

How often have the words custody and maintenance occurred in a corpus of books? (source: Google Ngram Viewer )